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Replacement MaxxFan Plus 4-Speed Roof Vent with White Lid
MAXXAIR

Replacement MaxxFan Plus 4-Speed Roof Vent with White Lid

Part Number: MA00-04751KSX
In Stock
$195.85
Retail:$207.69
You Save: $11.84
RV Vents and Fans
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Replaces the roof vent component for your RV's original model 00-04751KS MaxxAir MaxxFan Plus assembly. Works with your existing wall-mounted controller and garnish ring. Great Prices for the best rv vents and fans from MAXXAIR. Replacement MaxxFan Plus 4-Speed Roof Vent with White Lid part number MA00-04751KSX can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (79)
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MAXXAIR RV Vents and Fans - MA00-04751KSX

Highlights

  • 4-speed fan versatility: Offers a variable 12V DC fan with four speed options.
  • Rain sensor technology: Automatically closes the dome when wet, protecting interiors.
  • 900 CFM capacity: Efficiently circulates air, keeping RVs cool and comfortable.
  • Compact design: Extends only 3-3/4" when closed, ideal for rooftop installations.
  • Powerful exhaust function: Circulates air like a ceiling fan when closed.
  • 2-wire ease: Simple installation with black for power and white for ground.

Features to know about

Effortless Ventilation: Powerful 4-Speed Fan

If you need to keep the air moving in your RV, the Replacement MaxxFan Plus Roof Vent has you covered with its powerful 900 CFM fan. With four speed options, this fan can exhaust air out rapidly or operate like a ceiling fan when closed to circulate air within your space. Its a total game-changer for chasing away warm air from your camper or trailer.

Weather Woes Solved: Automatic Rain Sensor

Say goodbye to worries about unexpected downpours while you are away from your RV. This roof vent features a savvy rain sensor that automatically closes the dome and shuts off the fan as soon as it detects moisture. This way, your RV stays dry, and your electrics remain safe.

Seamless Upgrades: Compatibility with Existing Controls

Upgrading an existing setup? The MaxxFan Plus Roof Vent integrates seamlessly with your existing wall-mounted controller and garnish ring, minimizing installation hassles. Plus, if you’re missing gadgets, you can grab a replacement controller (MA00A03550K) or garnish ring (MA54FR).

Built for Convenience: Durable Polypropylene White Lid

Crafted for durability, the white lid is made from high-density polypropylene, ensuring long-lasting performance and a clean look that suits any RV design while letting light filter through. It stands up to the rigors of the road, all the while protecting the interior from dirt and debris.

Compact and Versatile: Ideal Dimensions for Your RV

Featuring a vent that extends above the roof to just 3-3/4 inches when closed, this system is designed not to interfere with your RV's aerodynamics. When open, it extends to 12-1/2 inches, offering substantial airflow. With an overall dimensions of 18-1/8 inches long by 16-1/2 inches wide, it's a perfect fit for most setups.

Energy Efficient Operation: Low Power Draw

Traveling off-grid? This system draws only 5 amps, maintaining energy efficiency for those relying on battery power. Rest easy knowing your climate control won't excessively drain your power reserves, ensuring comfort without compromise.

Specs

Dimensions

  • Overall dimensions (outside of flange to outside of flange): 18-1/8" long x 16-1/2" wide
  • Vent extends above roof when closed: 3-3/4"
  • Vent extends above roof when open: 12-1/2"
  • Overall fan diameter: 12"

Fan Specifications

  • Fan capacity: 900 CFM
  • Quantity of fan blades: 10

Electrical

  • Power draw: 5 amps

Note

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

00-04751ksx Replacement MaxxFan Plus 4-Speed Roof Vent with White Lid

Replaces 00-04751KS





Customer Satisfaction Score:

Ratings & Reviews

4.8

79 reviews
Replaces the roof vent component for your RV's original model 00-04751KS MaxxAir MaxxFan Plus assembly. Works with your existing wall-mounted controller and garnish ring.

by:

This unit fit a 2013 Keystone Raptor. It was easy to install, does not leak and works perfectly. The shipping and customer service were fast and fantastic from etrailer!



by:

Adam was extremely helpful. He went above and made sure I was ordering the correct part.

Gwendolyn Y. profile picture
Etrailer Expert

Gwendolyn Y.

5/8/2025

Thanks for sharing your experience, Ed! I'll make sure that Adam sees this too.



by:

Great fan this is my second, tried one and liked it so much I am replacing the second vent in the trailer with the same one



by:

Fit perfectly... only took a couple of hours....



by:

I use these on my food trucks to extract the heat from our equipment. Love them and they're built to last!



by:

Excellent customer service and fast notification of order received, order shipped, and order delivered.



by:

Lauren was great, thanks for your great customer service.



by:

This was an easy install as it was a direct replacement.



by:

Please let your customers that this is a two pack.



by:

Shipped fast. Exactly what we needed to replace the existing one



by:

Etrailer always comes through with parts we need at a Reasonable cost. Delivery is made when promised.



by:

This was a direct replacement for the version we had in our trailer. Our tech was able to remove the OEM version and drop in the replacement and get the connection made so all is well with the world of RVing now.



by:

The fan is just what I needed and is working great



by:

This replaced a fan that failed, product description was a complete match.

Henry profile picture

Henry

8/10/2024

It was working fine when I sold the trailer this past spring. I need to order another one for my motor coach, just have to wait until I return to home base this fall.



by:

5 star service and order follow-ups. There were Supply chain issues due to COVID but they kept me informed along the way. They even followed up to make sure items arrived ok. We'll done and thank you for caring!

Rick profile picture

Rick

12/12/2022

Works Great in our 5th wheel. It really moves the air and this allows us to cool the living area without the noisy AC. The customer support that we received when ordering it really came through!



by:

I can always depend on ETrailer for having the correct parts and materials that I need to maintain my RV or other trailers.



by:

The product is a replacement (that had broken 2 of the 3 spokes going down the road 15K miles) for one with a smoke colored lid. This one should keep the temperature down a bit in the sun. Don't know if it will be any stronger than the first one. The service from eTrailer was outstanding!



by:

It is a very good unit but needed to adapt it to a different brand of fan connection so had to order power cable.



by:

Perfect replacement for the fan we couldn't reach in the bathroom.



by:

It’s taken me a bit to install due to unforgiving weather. But everything with the fan was fantastic! So easy to take out old and replace with new. No need for instructions it’s already tagged for u. Device on ordering and receiving was quick and easy. I hope I don’t have to replace for a long time, but if I do I will definitely order from E trailer!



by:

After installation the RV was totaled in Hurricane Ian, so we never had a chance to use this item after installing it. Installation went well however, but that’s all I can comment on.



by:

Just what I needed. Came in two days. Why everyone thinks [online vendor] is the answer to everything is beyond me.

Brooke M. profile picture
Etrailer Expert

Brooke M.

2/3/2023

Thanks! We have been wondering the same thing!



by:

Love it works great. Easy to install.

Louise K. profile picture

Louise K.

10/8/2023

Great

Mike L. profile picture
Etrailer Expert

Mike L.

10/25/2023

@LouiseK Thank you, we're glad to hear that!
Louise profile picture

Louise

10/25/2023

Great ?? working as it should and love that you can lock it so animals can not open it.

Mike L. profile picture
Etrailer Expert

Mike L.

11/11/2023

@Louise Great, gotta keep those critters out!!


by:

package delivered on time. I have used etrailer in the past for parts and have nothing but great things to say about them.



by:

Exact replacement. Easy install. Excellent value.


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79
Show More Reviews

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

  • Replacement Recommendation For Older Ventline Roof Vent
    The Replacement MaxxFan Plus 4-Speed Roof Vent with White Lid # MA00-04751KSX is meant to be a direct replacement however not all the necessary hardware is included. The remaining items you'll need is the Key Wall Control part # MA00A03550K, Ceiling Garnish part # MA54FR, RJ11 Communication Cable part # 34279523, and the Roof Vent Installation Kit part # 344270KITW. Included is a picture of where you'll find the RJ-11 and RJ-45 connection points on the MaxxFan Plus 4-Speed Roof Vent...
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  • Recommended Replacement Fan for a MaxxAir 4951 With a White Lid
    Hey Paul, yes we do. You can use the Replacement MaxxFan Plus 4-Speed Roof Vent with White Lid # MA00-04751KSX to replace your current fan and will work with your original controller and garnish.
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  • Looking For Circuit Board For MaxxAir vent Fan In A 2021 Entegra Cornerstone
    Hello Dale. The circuit board in your picture looks an awful lot like the Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents w/ Exhaust Only Fan # MA39FR. There are several other similar looking circuit boards though, and generally, we need to get the model number from your vent in order to confirm fitment. There is no way to look up your RV to know what model of fan it was built with, so please inspect the vent to see if you can find a sticker with a part number or...
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  • What To Do If My Vent Lid Is Hitting The Vent Cover?
    Hi Shawn! You're dealing with a common issue when installing a MaxxAir II cover # MA76JR on a MaxxFan 4751KS, like the # MA00-04751KSX. Here’s the situation you're running into: -First, the MaxxFan lid opens almost vertical when fully opened (especially when turned on), which lifts it very high off the roof — too high for the MaxxAir II to clear with standard mounting. -Second, the brackets included with MaxxAir II are made for normal lower-profile vents, like typical crank vents, not...
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  • Troubleshooting MaxxFan 4700 Series, 4700K
    You reported that you cannot use the remote on your MaxxFan 4700K to put the vent cover up and down. Let's troubleshoot. Put some new batteries in your remote. Ensure that the display comes on. Verify if your vent cover now works. Verify if other remote functions work. If it is not your remote we can consider the following service parts. First let's perform a reset. Disconnect the 12volt power source from the fan circuit board for two minutes then reconnect and test again. Many times...
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  • RV Roof Vent Solution that Also Has Wall Control
    Hey Devon, does your RV roof vent wall control unit look like the # MA59FR? If so you have a MaxxFan Plus RV roof vent that was designed for wall control and for a replacement unit you would want the part # MA00-04500K to use a setup that would use same wall control and wall control wiring. Otherwise you'd have to go with this same unit and also swap out the wall controller.
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  • Correct Replacement For A MaxxFan 4951KS
    Yes you are correct the Replacement MaxxFan Plus 4-Speed Roof Vent with White Lid # MA00-04751KSX is the right replacement and measures 18 1/8" long and 16 1/2" wide, which is the same measurements as your current MaxxFan Plus Roof Vent w/ 12V Fan, Thermostat, and Remote # MA00-04500K.
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  • Will Replacement MaxxFan Plus 4-Speed Roof Vent Work With Wall Switch
    Hi Steve; does your wall switch look like the # MA00A03550K? The Replacement MaxxFan Plus 4-Speed Roof Vent # MA00-04751KSX is designed to replace the 00-04751KS which works with this wired wall controller. If you have this switch, or the older model with the fan off/on and vent open/close functions, the replacement vent is compatible.
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  • Why is My MaxxAir Fan Not Working When I Push the Auto Temp Button the Green Light Comes On?
    Hello Andrew, I am sorry to hear that your MaxxAir Fan is acting up. I was able to look up your order from last November and it looks like you have the # MA00-04751KSX. Here is some troubleshooting you can try to get it work: - Check power supply to make sure you are getting the full 12V by using something like a Hook Probe Circuit Tester # PTW2993 - Inspect fuses and connections. - Make sure the fan is not set to "Auto Off" and try turning it on manually instead of using the temperature...
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  • Replacement Lid For A MaxxAir MaxxFan 4951KS
    For your MaxxAir 4951KS the correct replacement lid is the Replacement Lid for MaxxFan and MaxxFan Plus Roof Vents part # MA10A40009K (smoke) or part # MA10A40002K (white). The shape of the lid is slightly less rounded as your current lid but it will still fit the same.
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  • Replacement Circuit Board For A MaxxAir MaxxFan In A 2021 Grand Design Solitude 3540 5th Wheel
    Since multiple MaxxAir Fans have the same features that you listed it's honestly best to first determine the exact model number you have before purchasing anything and end up not having it be compatible. I've listed below all the available circuit boards for the each model, if you have a tag on the vent listing the model number then we can identify the correct replacement. If not, you'll need to pull the circuit board and find the sticker on it that lists the model number. Once I have either...
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  • Can A Powered Lift Vent Function On An RV Roof Vent Be Wired To A Switch For Activation
    The switch on your wall is only turning the power on and off for the fan. With a powered lift there wouldn't really be a way to tap into the function and wire it to a switch to make it easier to access. The only option would be to replace the current vent with one that has a remote to activate the lift function, like the MaxxFan Deluxe Roof Vent w/ 12V Fan # MA00-07500K. There are also certain models (MaxxFan Plus: 4751KS or 4951KS and MaxxFan Deluxe 8751K or 8951K that can use wall mounted...
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  • Correct Replacement For A MaxxFan 00-04951KSCX
    I am afraid we do not carry the exact model fan 00-04951KSCX that you are looking for. We do have the MaxxAir # MA00-04751KSX which is a very similar MaxxFan Plus Roof Vent. This will be a suitable replacement for your vent, if you are looking to replace it.
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  • Replacement Lid For A MaxxAir MaxxFan 4751KS
    The correct replacement lid for MaxxFan 4751ks is the Replacement Lid for MaxxFan and MaxxFan Plus Roof Vents part # MA10A40009K for black or part # MA10A40002K for white.
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  • Troubleshooting A MaxxAir Fan That Randomly Turns On With The Keypad Disconnected
    If your MaxxFan Plus 4-Speed Roof Vent with White Lid # MA00-04751KSX isn't lifting electronically or manually then your lift arm or operator # MA10-20281K-1AF is most likely broken and would need to be replaced. The gear inside these are notorious for breaking so the knob is most likely just spinning inside the broken gear. If the fan is kicking on without the keypad connected then the motor is somehow getting power to it activating it. These fans typically get tied in with the wiring...
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  • Can MaxxAir RV Roof Vent 4751KS be Used with Wireless Remote
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  • Can MaxxAir MaxxFan Plus Roof Vent # MA00-04751KSX Replace 4951KS
    Yes, the MaxxAir MaxxFan Plus Roof Vent # MA00-04751KSX that you referenced would easily replace the MaxxFan you currently have installed in your 2015 Montana 36RL as this fits the same size RV roof opening.
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  • MaxxAir Roof Vent for RV that is Compatible with Wall Control Unit
    If you have the wall control part # MA00A03550K installed in the wall of your trailer the Maxxair Fan part # MA00-04751KSX would easily integrate into it and work great. If you have a different switch setup let me know and I'll see what options you may have.
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  • MaxxFan Roof Vent w/ 12V Fan in White Versus Smoke
    The MaxxFan Roof Vent w/ 12V Fan - Manual Lift - 4 Speed - Smoke # MA00A04401K can have the cover replaced with a white one using # MA10A40002K. This is the closest option to clear. If you want a powered lift you can alternatively use the MaxxAir MaxxFan Plus Roof Vent w/ 12V Fan - Powered Lift - 4 Speed - White # MA00-04751KSX which will use the same replacement lid.
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  • Which MaxxFan Circuit for MaxxFan with Electric Lift Arms and Rain Sensor
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  • Is There RV Roof Vent Option with Wall Mount Controller
    I have a solution that I think would work well for you but all of the roof vents we offer for RVs do use either remotes or controllers on the assembly itself. The MaxxFan Plus Roof Vent # MA00-04500K though comes with a wall mount for the remote though so you could leave the remote in the wall mount and you'd basically have a wall mount controller. If you check out the picture I attached you can see the remote being held in the wall mount.
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  • Roof Vent Cover for MaxxAir MaxxFan Plus on Grand Design Solitude
    If you've got a Maxx Air MaxxFan Plus like the # MA00-04751KSX you can use the MaxxAir FanMate RV and Trailer Roof Vent Cover - 25" x 18-1/8" x 10-1/4" - Smoke # MA00-955003, which is designed to fit 2015 and newer MaxxFan and MaxxFan Plus roof vents with mounting tabs. This will allow you to keep your vent open and running no matter what the weather is like outside. I've also linked a review video of this part and the other available colors of this vent cover in case you're looking for...
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  • Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents
    Knowing the actual model number would be best so as to confirm you are ordering the correct part but, if you have the the MA00-04751KSX then we have the Replacement Printed Circuit Board for MaxxAir Powered Lift RV Roof Vents, # MA39FR.
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Info for this part was:

Employee Jeff D
Installed by:
Jeff D
Employee Jameson C
Expert Research:
Jameson C
Employee Wilson B
Updated by:
Wilson B
Employee Manda E
Updated by:
Manda E
Employee Amanda M
Edited by:
Amanda M
Employee Adam Y
Written by:
Adam Y

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