bing tracking image
  1. RV Vents and Fans
  3. Roof Vent
  4. With 12V Fan
  5. With Reversible Fan
  6. Vent
MaxxFan Plus Roof Vent w/ 12V Fan and Thermostat - Manual Lift - 4 Speed - White

MaxxFan Plus Roof Vent w/ 12V Fan and Thermostat - Manual Lift - 4 Speed - White

Item # MA00-04002K
Our Price: $231.10
You Save: $19.44
RV Vents and Fans
This item qualifies for Free Shipping
Shipping Weight: 12 lbs
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images


Need help with installation?
Locate installers near me
Product Expert Kathleen M

Is this right for you? Product Expert Kathleen M says:

Yes, if you:

  • Travel with pets and want to make sure the fan will turn on when it gets to the thermostat setting to keep the air moving
  • Want a reversible fan that can also pull in fresh air so you don’t need to run your AC on nice days

No, if you:

  • Have a hard time reaching up to the ceiling to adjust the fan or open the vent and would rather have a wall switch or remote
  • Leave the vent open during rainstorms and don't want to worry about causing damage
  • Want more adjustability with the fan speed to get it dialed in just right
This manual-lift roof vent has a reversible, 4-speed fan and a thermostat to regulate airflow inside your RV, camper, or trailer. Ceiling fan mode circulates air when vent is closed. Removable bug screen keeps insects out. Great Prices for the best rv vents and fans from MAXXAIR. MaxxFan Plus Roof Vent w/ 12V Fan and Thermostat - Manual Lift - 4 Speed - White part number MA00-04002K can be ordered online at or call 1-800-940-8924 for expert service.
  • All Info
  • Reviews (156)
  • Q & A (0)
  • Photos
  • Why etrailer?

MAXXAIR RV Vents and Fans - MA00-04002K

  • Roof Vent
  • With 12V Fan
  • With Reversible Fan
  • Vent
  • 14W x 14L Inch
  • White
  • Manual Lift
  • 3-3/4 Inch

This manual-lift roof vent has a reversible, 4-speed fan and a thermostat to regulate airflow inside your RV, camper, or trailer. Ceiling fan mode circulates air when vent is closed. Removable bug screen keeps insects out.


  • Roof vent with fan and thermostat moves air in and out of your RV, camper, or enclosed trailer
    • Vent allows air to circulate while your RV remains locked and secure
  • 12V DC, variable-speed fan has 2 modes of operation
    • In manual mode, 4 speed options let you increase or reduce airflow
    • In auto mode, fan turns on and off based on preset temperature of thermostat
  • Reversible fan can either bring air in or exhaust air out
    • Circulates air like a ceiling fan when the vent is closed
  • Flush-mounted keypad on vent allows you to set the thermostat and the fan speed and direction
  • White-colored dome (or lid) is made of high-density polypropylene
    • Seamless, low-profile appearance when closed
  • Manual lift design has 2 arms to support the dome and keep it open
    • Manual knob lets you operate dome
  • Bug screen keeps insects out and is easy to remove for cleaning or maintenance
  • Fuse-protected, ball bearing motor is sealed to keep out dust, dirt, and moisture
  • Rubber weather seal helps prevent leaks when vent is closed
  • Molded-in mounting flange is constructed of UV-resistant ABS plastic
    • Smooth edges won't cut you during installation
  • Mounting tabs on flange allow for no-drill, tool-free installation of FanMate vent cover (sold separately)
  • White interior trim piece (or garnish), insulated electrical connectors, and hardware are included for installation
    • Roof sealant sold separately
  • 2-Wire design
    • Black wire is power
    • White wire is ground


  • Fits: roofs 2" - 6-1/2" thick
    • Opening size: 14" wide x 14" long
  • Overall dimensions (outside of flange to outside of flange): 18-1/8" long x 16-1/2" wide
    • Garnish dimensions: 16-1/4" long x 16-1/2" wide
  • Vent extends above roof:
    • When closed: 3-3/4"
    • When open: 11-7/8"
  • Overall fan diameter: 12"
  • Fan capacity: 900 CFM
  • Quantity of fan blades: 10
  • Power draw: 5 amps
  • Warranty:
    • 2-Year limited on vent assembly
    • Limited lifetime on dome

Note: Not for use above tubs, showers, or range cooking surfaces.

Reversible, Variable-Speed Fan with Thermostat

MaxxAir Maxx Fan Plus Fan and Motor

The 12-volt, variable-speed fan has 2 modes of operation: manual and auto. When the fan is in manual mode, you can choose from 4 different speeds to increase or reduce the airflow as needed. Auto mode works in conjunction with the fan's thermostat.

To enter auto mode, press the auto mode button on either the remote control or keypad. Once the fan is in auto mode, the thermostat is activated with a set temperature of 78 degrees F. Pressing the arrow keys on either the remote or keypad changes the set temperature in 1 degree increments. When the thermostat is set, it senses the room temperature and automatically turns the fan on if it is above the set temperature. The fan shuts off when the set temperature has been reached. If the room temperature rises, the fan turns on again. This keeps your RV cool and comfortable and saves you from having to adjust the fan by hand. The auto mode also saves energy by running the fan no more than necessary, especially while you're away or asleep.

This fan is reversible, which means you are able to both exhaust stale air out of your RV and bring fresh air in from the outside. To enter ceiling fan mode, close the vent while the fan is still running. The fan then circulates the air inside your RV like a ceiling fan.

The fan has a fuse-protected, ball bearing motor that is sealed to keep out dust, dirt, and moisture.

Flush-Mounted Keypad

MaxxAir Maxx Fan Plus Keypad

The flush-mounted keypad on the vent enables you to operate the vent and fan, including opening or closing the dome and turning the fan on or off. You can also control the fan speed, the direction of the airflow, and the set temperature for the thermostat.

Manual-Lift Dome with Twin Arms

MaxxAir Maxx Fan Plus Twin Arms

The dome on this roof vent is constructed of durable high-density polyethylene, and it is translucent so that some natural light can shine through. When it's closed, the dome provides a seamless, low-profile appearance that blends into the roof of your RV.

Unlike a dome that has only 1 arm, this manual-lift dome is supported by 2 sturdy arms so that it will not flutter during high winds or while you are driving.

MaxxAir Maxx Fan Plus Manual Knob

And a manual hand knob is built into the underside of the vent to allow you to open and close the dome. Pull the knob outward, turn it to where you want it, and push it in to lock the dome into place.

Removable Bug Screen

MaxxAir Maxx Fan Plus Bug Screen

This vent has a bug screen that helps keep insects and debris out of your RV. It is secured to the vent with 4 built-in retainer clips. These clips make it easy to remove the screen for cleaning or maintenance. Just rotate the clips, and the screen will pop out.


The MaxxFan Plus vent fits standard 14" x 14" openings in the roof of an RV, camper, or enclosed trailer. A white interior trim piece (or garnish), insulated electrical connectors, and hardware are included for installation. The vent also has a molded-in mounting flange that is lined with a rubber weather seal, which helps prevent leaks. Roof sealant (sold separately) is required for installation.

To install, connect the two wires on the vent to your RV's electrical system. The black wire is for power, and the white wire is for ground. Then insert the MaxxFan Plus into the opening in the roof and mount the flange to the roof. To finish, trim the garnish as needed to fit the thickness of your roof and install it.

MaxxFan Plus With FanMate Cover

For extra rain protection, install a MaxxAir FanMate vent cover (sold separately) using the molded mounting tabs located on the flange. The tabs are designed to align with the integrated brackets on the FanMate, allowing for a no-drill, tool-free installation. These tabs also have rubber inserts that prevent water from seeping in under the flange.

00-04002K MAXXFAN Max Air Max Fan Plus RV and Trailer Roof Vent - White Dome

Customer Satisfaction Score:

Customer Reviews

MaxxFan Plus Roof Vent w/ 12V Fan and Thermostat - Manual Lift - 4 Speed - White - MA00-04002K

Average Customer Rating:  4.8 out of 5 stars   (156 Customer Reviews)

This manual-lift roof vent has a reversible, 4-speed fan and a thermostat to regulate airflow inside your RV, camper, or trailer. Ceiling fan mode circulates air when vent is closed. Removable bug screen keeps insects out.


Fairly easy to install and really like the feature that will turn it on automatically when temp reaches 78f.


Was a relatively easy installation and seems to be working fine only thing I do not like is that if you lose power to it it goes back from the temperature setting for the fan back to 78°


MaxxFan is a wonderful product, easy to install, and once again fast shipping. Thank you etrailer!


I have had my Maxx fan for a year now. The install went well. With the right tools it was pretty easy.


Love it. Keep it on all night when sleeping in the van. Runs off a Jackery 500.


I have not installed it yet, but I have 2 of which I am very pleased with.


Excellent product. Replaced old fantastic fan that broke. install was easy and fan eorks great.

Continues to work great !!
Jon S - 06/07/2021


Product came just as described. Fast sh ipping

by: 06/19/2021

Love it! Absolute must for any rv. We added two so one pulls air in and the other pushes out. No need for the air conditioner most nights. Relatively easy to install, just find power close, usually a ceiling light.


I love it works great! Being able to reverse or blow in fresh air is great. It was easy to install too. Thanks


Looks well made and durable






Excellent service



Review from a similar MaxxFan Plus in RV Vents and Fans

So far so good. The fan arrived on time, and despite being shipped without the benefit of an outer box, there was no damage to the fan. The installation instructions were clear, and the installation was not overly complicated. The fan itself is very quiet, allows a good amount of light in, and swiftly pulls heat and presumably propane exhaust up and out of the kitchen. It’s a huge improvement for our 2011 Keystone Raptor both in terms of safety and convenience. The materials and construction of the fan appear to be of high quality, but time will tell how well it will hold up to daily use and occasional travel.

Overall the fan is still working well. However, it has failed to respond as it should to rain. It’s supposed to stop and close when moisture is detected in order to prevent rain from coming inside the RV. Although we don’t usually leave it open if nobody is here, I forgot it was on once when an unexpected rain storm suddenly drove a lot of rain through the fan to the kitchen floor before I realized what was happening. One other thing that I haven’t yet addressed is that I can’t adjust the degree of the fan cover opening as it seems we should be able to do. It’s either 100 open or closed regardless of the fan speed setting. Nevertheless the fan does the job that we bought it to do, and it’s very effective. I also love that it lets a good amount of filtered sunlight in which helps brighten up our kitchen and living room.
Liza - 10/21/2022


Review from a similar MaxxFan Plus in RV Vents and Fans

I purchased 2 MaxxAir fans about a year ago & I couldn't be more pleased with my purchase!
My husband and I installed them ourselves, which was a bit of a task but still doable. Removing the old adhesive before installing the new fan was the hardest part.
They aren't cheap, so I was a little hesitate before buying, but they have proven to be worth every penny! I'm actually on a cross country road trip right now, using these wonderful fans everyday since I hit the road in August.
They're great for blowing out the hot air after a hot day, cooling off the rv when it gets a bit too warm inside or when you just need a little circulation. The rain sensors are so incredibly helpful and work great! The lids are a bit noisy when they open and close, but once the lid stops moving, the fan isn't that distracting at all, especially on the lower settings. I highly recommend the MaxxAir Fans!

Under 2 years old & both fans started giving us major problems. One fan regularly scream, flashes & shuts off for no reason, & the rain sensor stopped working yes I clean it, causing a terrible rain flood in my RV. The other fan will not run at all, it just screams & closes instantly. Ive called MaxxAir several times, was told twice they were going to send replacement parts & nothing ever arrived. I am no longer a happy customer & would never recommend MaxxAir Fans to anyone. Their product & customer service has failed me.
Jillian D - 01/20/2022


Review from a similar MaxxFan Plus in RV Vents and Fans

I installed this in my 1999 Ford E350 ambulance-to-camper conversion last year. Absolutely phenomenal product! We are both light sleepers, and the fan is right over the bed, but on the three lowest settings it is virtually silent, yet still moves enough air to provide a nice, cooling breeze. On high it really moves some air, and being reversible and having 10 speeds you can pretty much have whatever you want. I bought two, but only used one. When a buddy saw how well mine worked, and found out I had another one, he bought it from me at full price.
It has a remote control in addition to the controls on the fan, and a manual "crank" in case you lose battery power. Oh yeah, the rain sensor works too!


Review from a similar MaxxFan Plus in RV Vents and Fans

Fairly easy install. Hardest part is getting the old one out and all the sealant cleaned off. Two wire hookup. What I really like about our new fan is the one touch operation. Once you get it adjusted the way you want, one touch of the power button opens the lid and starts the fan. Reverse is true when you turn it off. Major upgrade from the small fan that came with our 5th wheel.


Review from a similar MaxxFan Plus in RV Vents and Fans

I ordered and installed a MaxxAir 4500K Vent fan to install in our cabover area of our Class C motorhome from . This is the second one we installed, the first one in the RV bathroom is still working great after about 1 years time. Reason I installed a 2nd one is so we can have one fan exhaust air while the other fan pulls air into the RV and thereby create a wind tunnel through the RV so we can close and lock the windows but still cool the RV in moderately warm weather when we want to leave the dog in the RV and go somewhere with everything locked up. I chose Etrailer for this purchase because they had a good price and they show MaxxAir as one of their partner brands and state the fan has a 2 year manufacture warranty right on the page where it is listed. The fan was shipped quickly and I was pleased it wasn't old stock, the model label on the fan showed 2018 manufactured. I also bought a Maxx II cover for it.


Review from a similar MaxxFan Plus in RV Vents and Fans

Like everything about the unit, excepting one minor thing. The delivery time was better than good, ease of installation was simple and direct, wire for fan was labeled "power", all actual fan functions seem as advertized. Call to e-trailer was short and accurate with my Q's about what was to be included. The "fall short" aspect has less to do with E-trailer than the manufacturer. Appearantly, the remote is an I.R. unit and will only operate the fan with a direct line of site. Can't use it unless I can see the fan.


Review from a similar MaxxFan Plus in RV Vents and Fans

I love etrailer about 90% of the time. The other 10% is when I attempted to order keyed alike locks. It all ended ok but was a pain. In any case this is a review about a maxxfan 4500k. Let me just start by saying etrailers price was $125 higher than a competitors and they were willing to price match it. So a solid A+ on price matching. The box came just as it would if you bought it off the shelf. No additional packaging which is fine. I’ve had this same fan before and it works great. Thanks again for the price match etrailer. The fan will go in next week when I redo my RV roof on my Montana 3750fl.


Review from a similar MaxxFan Plus in RV Vents and Fans

I watch a youtube channel called "Big Truck Big RV." You sponsor this channel. This person speaks very highly of your company. I know he is compensated to, but he always gives his honest opinion. I respect his opinion and when I need to replace a faulty MAXX Air Fan, I decided to look at etrailer. The price seemed fair. It was pulled from the warehouse, shipped, and received within days. I have not opened the fan yet because I am waiting for a time when I can install it. I have confidence that if I have any issue that etrailer will help me. I am looking forward to working more with your company.

Great, no issues
Timothy - 10/20/2021

Show More Reviews

See what our Experts say about this MAXXAIR RV Vents and Fans

  • Is There Version of MaxxFan RV Roof Vent that Has Remote Control
    I wish that was possible but there isn't a way to wire the MaxxFan so that it would power on to last used settings. There isn't a remote that works with this either. There is a similar version of this that does have a remote control with the MaxxFan RV Roof Vent part # MA00-07500K which would require you to remove what you have now. This also has a power lid feature as well.
    view full answer...
  • Why Aren't Powered Roof Vent Fans Recommended Above Showers and Cooktops in RVs
    Because of the high humidity environment around showers and range cooking surfaces, it isn't recommended that a powered vent like the # MA00-04002K fan be used in those areas. The high humidity will dramatically shorten the lifespan of the circuit boards and motors of a powered fan. You can certainly install the fan, but you'll likely not be pleased by how long it would last. In that kind of environment, a manual vent like # MA00-03700 is what's recommended. I've linked you to a product...
    view full answer...
  • Low-Profile MaxxFan Roof Vent Options For A Converted 2013 Ford Transit Connect Cargo Van
    In order to get the features you want (rain guard, reversible fan) you'll have to go with a fan like the MaxxFan Deluxe Roof Vent w/ 12V Fan and Thermostat # MA00-05100K or # MA00-05301K that you mentioned. These fans that have the options you want, come standard with a 10 speed fan, and a thermostat. If you really didn't want the 10 speed fan however, we also have the MaxxFan Plus Roof Vent w/ 12V Fan and Thermostat # MA00-04002K. This is a 4 speed fan that is also reversible with a...
    view full answer...
  • Can the MaxxFan Dome Plus Roof Vent Pull Air In
    The MaxxFan Dome Plus Roof Vent part # MA00-03810B is an exhaust fan so it can only pull air out. If you are looking for a vent fan that does both you'll have to go with the larger square style like the MaxxFan Plus Roof Vent part # MA00-04002K which can still be installed in a van but more modifications would be needed.
    view full answer...
  • Low Profile Roof Vent with Fan and Thermostat
    The MaxxFan Plus Roof Vent w/ 12V Fan and Thermostat # MA00-04002K is the most comparable option if you are also needing a thermostat. The # MA00-04002K will weigh approximately 2 lbs. more than the MaxxAir MaxxFan Mini Roof Vent # MA00-04301M. The # MA00-04002K will still be a 14"x 14" opening like the # MA00-04301M but it will sit just under 1" higher when closed than the # MA00-04301M.
    view full answer...
  • Do MaxxAir MaxxFan RV Roof Vents Come With Wiring Connectors Included
    The MaxxFan Plus Roof Vent w/ 12V Fan and Thermostat # MA00-04002K you were looking at comes with 2 butt-connectors for you to be able to splice your vent's wiring to the wiring in your RV. You will want a good pair of crimps # PTW30764 to crimp the ends of the butt-connectors.
    view full answer...
  • Looking For Reversible MaxxAir RV Roof Vent Fan
    The MaxxFan # MA00A04301K you referred to isn't reversible, it will exhaust only. If you want a reversible fan, you'd need to go with the MaxxFan Plus, part # MA00-04002K. This fan is reversible and can operate manually or by using the preset 78° thermostat. The 4000K model is still available as part # MA00-04000K, it features a 10 speed fan, versus the 4 speed offered by the # MA00-04002K. I've linked to product description videos for both vent fans
    view full answer...
  • Replacement For Northern Breeze 12V Fan
    You are correct that the replacement motor was discontinued a number of years ago, and the motor you asked about won't work as they aren't interchangeable parts due to size, current, etc. So the only option really is a new vent, and you can choose from a standard one or go for a nice upgrade. For example basic option like the Ventline E-Z Lift Ventadome Trailer Roof Vent with 12V Fan # V3094-603-00 or something like the 4-speed MaxxFan Plus Roof Vent with 12V Fan and Thermostat # MA00-04002K. I...
    view full answer...
  • MaxxAir Roof Vent Fan Dome Will Not Open
    If the dome on your MaxxAir # MA00-04002K vent fan will not open with the manual knob then the MaxxAir # MA10-20281K-3CF "operator" is broken and should be replaced. This is a little gear box that actuates the lifter arms on the lid. Your original question make it sound like your fan had an automatically opening lid, which the 4002 model does not. If you have a different model then let me know for an updated recomendation
    view full answer...
  • Should I Use Smoke or White MaxxAir Roof Vent and Vent Cover
    Both the smoke and white colors will be the same in regards to how much heat gets through and will be relatively similar when it comes to light, although the smoke will naturally be a little darker. Since you'll be using the roof vent AND a cover though you won't see as much light either way so my recommendation is to use whichever matches the color scheme of your trailer better. For white you want these parts: Vent - # MA00-04002K Vent Cover - # MA76JR For smoke you want these parts: Vent...
    view full answer...
  • Replacement Roof Vent Garnish For 2020 Forrest River Flagstaff With MaxxAir MaxxFan
    To replace the garnish on your MaxxFan Roof Vent # MA00A04401K you will want the Ceiling Garnish # MA54FR. This garnish is 5-3/4" tall and can be trimmed if required to fit the roof height on your 2020 Forest River Flagstaff Micro Lite. The Garnish # MA54FR will also fit 4000K # MA00-04000K 4002K # MA00-04002K 4301K # MA00A04301K 4500K # MA00-04500K 4751K # MA00-04751KSX
    view full answer...
  • Will a Roof Top Vent Fit in the Opening from a A/C Unit
    Most of the roof vents that we carry will fit your opening. Unfortunately, we do not have a clear option for a roof vent cover. We have # FV803350 which will have a tinted cover that you can still see through. You could also go with the same style vent but with a white cover # MA00-04002K. We recommend pairing the roof vent with a vent cover so that you can open the vent while you are driving. Two good options would be # FVU1500BL or # MA00-955001.
    view full answer...
  • Recommended MaxxAir Roof Vent Covers For a 2022 Tiffin Phaeton 37BH Motorhome
    I recommend the MaxxAir FanMate RV and Trailer Roof Vent Cover for your 2022 Tiffin Phaeton 37BH. These covers are available in Black # MA00-955002 to reduce light from entering and match other black roof fixtures, Smoke # MA00-955003 to allow light in while blending in well with roof fixtures and a White # MA00-955001 which will match with white roof fixtures and will still allow light in. While these are easily installed on MaxxAir fans like the Plus # MA00-04002K with the roof clips...
    view full answer...
  • Can A Maxxair Roof Vent Be added To A 2000 Starcraft Venture 1706 Pop Up Camper
    Adding a vent to your 2000 Starcraft Venture 1706 Pop Up camper requires a few things. The roof opening has to be at least 14" x 14" and the roof thickness has to be between 2" to 6-1/2" thick. If you are replacing a current vent you can remove the inside garnish to measure the opening. A few other things I recommend when installing a new fan. You need 2 of the LaSalle Bristol XTRM Universal Self-Leveling Sealant - White - Qty 1 Item # 34427034145-1. This is used to seal around the top...
    view full answer...

Do you have a question about this RV Vents and Fan?

  • Why

    At we guarantee:
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate rv vents and fan information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jameson C
Expert Research:
Jameson C
Employee Kathleen M
Updated by:
Kathleen M
Employee Wilson B
Updated by:
Wilson B
Employee Adam Y
Updated by:
Adam Y
Employee Manda E
Updated by:
Manda E
Employee Cole B
Installed by:
Cole B
Employee Mary E
Written by:
Mary E
Employee Amanda M
Edited by:
Amanda M

At we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.

Product Experts Available Now!
Call 1-800-940-8924