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  1. RV Vents and Fans
  2. Fantastic Vent
  3. Roof Vent
  4. With 12V Fan
  5. Vent
  6. 14W x 14L Inch
Fan-Tastic Vent Roof Vent w/ 12V Fan and Thermostat - Powered Lift - 14-1/4" x 14-1/4"

Fan-Tastic Vent Roof Vent w/ 12V Fan and Thermostat - Powered Lift - 14-1/4" x 14-1/4"

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Product Expert Adam Y

Is this right for you? Product Expert Adam Y says:

Yes, if you:

  • Want to open and close your lid with the push of a button
  • Want your lid to automatically close when it rains so you don’t have to worry about your interior getting wet

No, if you:

The rain sensor on this thermostat-controlled roof vent ensures that the dome closes and the variable-speed, reversible, 12V fan shuts off when rain or snow hits. Powered lift eliminates hand cranking. Lowest Prices for the best rv vents and fans from Fantastic Vent. Fan-Tastic Vent Roof Vent w/ 12V Fan and Thermostat - Powered Lift - 14-1/4" x 14-1/4" part number FV803350 can be ordered online at or call 800-298-1624 for expert service.
  • All Info
  • Reviews (26)
  • Q & A (0)
  • Photos
  • Why etrailer?

Fantastic Vent RV Vents and Fans

  • Roof Vent
  • With 12V Fan
  • Vent
  • 14W x 14L Inch
  • Tinted
  • Powered Lift
  • Fantastic Vent

The rain sensor on this thermostat-controlled roof vent ensures that the dome closes and the variable-speed, reversible, 12V fan shuts off when rain or snow hits. Powered lift eliminates hand cranking.


  • Roof vent with reversible 12V fan pushes stale air out of and pulls fresh air into your RV, camper, or enclosed trailer
  • Variable-speed fan offers 2 modes of operation
    • 3 Manual speeds let you boost or reduce airflow as needed
    • Automatic, thermostat-regulated settings conserve energy by running only when preset temperature is reached
  • Rain sensor signals dome to automatically close and fan to shut off when wet
    • Powered arm opens and closes hinged dome - no hand cranking needed
    • Fan resumes when sensor is dry
  • Knob on vent housing allows you to operate dome by hand in case of power failure
  • Pop-out screen keeps insects out and easily detaches for cleaning
  • 10 Clear fan blades allow sunlight into RV
  • Smoke-colored polyethylene dome filters UV rays while allowing light in
  • White interior polypropylene trim (or garnish) and roof flange are included
    • Smooth edges won't cut you during installation
  • Simple installation with 2-wire design
    • Hardware included
  • Made in the USA


  • Application: RV, camper, and trailer roofs up to 4" thick
    • Rough opening size: 14-1/4" x 14-1/4"
  • Vent extends above roof:
    • 4-1/2" When closed
    • 11-1/2" When open
  • Fan motor:
    • Capacity: 920 CFM
    • Voltage: 12 volts
    • 4-Amp slow blow fuse
  • Warranty:
    • 2-Year limited on vent assembly
    • Lifetime on dome (lid)

This Fan-Tastic Vent roof vent has a built-in 12V fan that uses a thermostat to help maintain an even temperature inside your RV, camper, or enclosed trailer. You can also control the dome and fan manually with a built-in hand knob or with controls on the vent housing. A rain sensor is included as well to signal the dome to close and the fan to shut off when it gets wet.

Ceiling Vent and Fan with Thermostat

Air out your RV after cooking or just draw in some fresh air while you sleep. This variable-speed ceiling fan operates in 2 modes: manual and automatic. The fan activates when you move the fan blade rocker switch to the in or the out position, which designates the direction of airflow.

When using the automatic mode, you can preset the fan to maintain a desired temperature inside your RV. The thermostat dial is color coded, with dark blue representing the coolest setting and dark red representing the warmest setting. The fan's internal thermostat will sense the actual room temperature, and the fan will run until the preset temperature is achieved. When the temperature rises above the preset temperature, the fan will automatically kick on again. So when you go out, you don't have to waste energy by leaving the vent running at full blast just to ensure that your RV is cool when you return. And because the fan will activate anytime that the preset temperature is reached, you can set up the system to ensure that your pets remain comfortable while you're out.

To control the fan manually, turn the speed knob on the vent housing. There are 3 speeds: low, medium, and high. There is also an off position.

Power Lift and Rain Sensor

Fan Tastic Vent Lift Dome

This Fan-Tastic Vent has a powered lift arm for the dome, so you don't have to manually crank it open or closed. The dome automatically opens when you turn on the fan. You can also use the small rocker switch on the vent housing to open and close the dome when the fan is not running. And a hand knob is built in so that you can operate the dome in the event of a power failure.

A moisture sensor ensures that the dome will close when rain or snow hits. So you can leave the vent running or preset it to run at a certain temperature, even if the forecast calls for rain. When the sensor gets wet, it signals the dome to close. With the dome closed, the fan blades will stop running. When the sensor dries, the dome will re-open and the fan blades will resume operation. To keep the sensor from activating in rain, snow, or humid and dewy conditions, simply add a vent cover (sold separately) to block moisture.


This vent requires a 14-1/4" x 14-1/4" opening in your trailer's roof and ceiling. To replace an old vent, install this vent into the existing opening. If your roof does not already have a vent, you will need to mark and cut an opening between roof joists to install this unit. And the 2-wire design makes it easy to have your vent hooked up and ready for use.

9108870059 Fantastic Vent Series 3350 Trailer Roof Vent with 12-Volt Fan - Power Lift Top - 14-1/4" x 14-1/4"

Replaces Fantastic Vent 803350

Item # FV803350

Customer Reviews

Fan-Tastic Vent Roof Vent w/ 12V Fan and Thermostat - Powered Lift - 14-1/4" x 14-1/4" - FV803350

Average Customer Rating:  4.8 out of 5 stars   (26 Customer Reviews)

The rain sensor on this thermostat-controlled roof vent ensures that the dome closes and the variable-speed, reversible, 12V fan shuts off when rain or snow hits. Powered lift eliminates hand cranking.

- FV803350

Absolute waste. It seems like when the company was sold they changed the programming and instead of fixing it or giving customers an option (read: a simple switch!) they made it so the rain sensor just shuts it permanently absolutely destroying any usefulness of the rain sensor. Customer service doesn't even understand the problem (e.g. getting up at 3 am because of a 2 minute rain at midnight to cycle the fan power) or alternative uses (e.g. using the fan to prevent overheating for longer periods- an all day hike). It now just closes permanently a the first drop of rain instead of reopening when the sensor is dry. I literally ripped this brand new fan out two weeks after install and a year later it's still sitting on my workbench because I refuse to hobble someone else with this absolute piece of garbage before I get a chance to override the problem with an FRM01 12v relay computer. I haven't bothered because 1. I have a better fan (the old version I was lucky enough to find) 2. this one has a chimney which sits up 2" higher 3. the new motor is weak enough that even if nothing else was wrong it would still be a mediocre fan. The old model has a horizontal front hinge and a black motor housing that extends into the lid. Beware a lot of images of the old model are still used in listings for the new model.

- FV803350

Wanted to upgrade the feeble factory bath vent so I went with this one. As always etrailer was the best price and delivery was perfect.

- FV803350

The quality looks very good ! I just received the package and have not installed the fan yet. I do like buttons on the fan instead of on a remote control. More direct. The price was great and the service was fantastic !!. I know this fan will fit perfectly as upgrade for replacement on my old fan.

- FV803350

I love the fans. I bought two and they help keep my rv's temperature at a reasonable temp. I would rather have fresh air than use the air conditioner.

- FV803350

The ordering process was great. The vent works great. We are very satisfied

- FV803350

Haven't installed it yet,so far so good. Thank you so much..

- FV803350

etrailer is my "go to" place for rv accessories, everything I've received from them has been delivered on time, and the products are quality. They pack the merchandise very well, nothing to date has arrived damaged. I am very satisfied with the products and service I receive from them.

- FV803350

The vent roof fan works very well

- FV803350

Installed on my 2003 5th wheel. The best part is the rain sensor to close it!! Shudda bought this years ago. Great product and as always, here on eTrailer, MY "Go To" store. I always seem to shop this site, simply the best for products and SERVICE.

- FV803350

I received my fan and installed it the same day. They kept me informed when it was shipping and even called to verify my shipping address since it was different from my billing address. Good people to work with and pricing was very competitive

- FV803350

I have not installed the product yet, but it is exactly what I ordered. It is a replacement, so I'm sure it will be just fine when I put it in. All the pieces are the same as what I took out. Delivered quick and in good condition.

- FV803350

Very good product easy to install a works just like it say it would

- FV803350

Best fans you can get on the market

- FV803350

I got fan this morning it is as you described will install later on this week.i’am sure it will work as it should thank you for the prompt delivery. If i have any problems i will contact you i’am sure all will be as it should be.

- FV803350

Still works well , looks like new

- FV803350

Exact fit works great. Service was excellent and on time. Thanks

- FV803350

Works well just like new still looks new

- FV803350

- FV803350

- FV803350

- FV803350

- FV803350

Thank you

- FV803350

- FV803350

- FV803350

Show More Reviews

Ask the Experts about this Fantastic Vent RV Vents and Fans

  • Solution to Replace Remote on Fan-Tastic Vent 6600R-417 Without Replacing Entire Unit
    I do have a solution for you that doesn't involve replacing your entire unit, but the Fan-Tastic Vent Roof Vent # FV803350, does not have a receiver built into it, so it doesn't have the option to operate through a remote. Therefore, using its replacements parts get you what you need. Take a look at the Fan-Tastic Vent Roof Vent Assembly Upgrade Kit # FV807359. This has everything you need (includes remote) to basically replace the "guts" of your Fan-Tastic Vent 6600R-417 unit and upgrade...
    view full answer...
  • Replacement Vent Lift Motor For Fan-tastic Vent Roof Vent
    I noticed that you've been a long time customer- so thank you for your repeat business! It looks like you recently purchased the Replacement Housing Unit for Fan-Tastic Vent Lift Motor # FVK6035-80 and if I'm understanding you correctly, you now need the actual replacement motor? The replacement motor unit that works with that housing is the Replacement Lift Motor for Fan-Tastic Vent B Series Roof Vents with Powered Lifts # FVK6050-80 . If you're actually looking to replace the entire...
    view full answer...
  • Replacement Vent Dome for my Fan-Tastic 8000 Series Vents
    The Replacement Dome for Fan-Tastic Vent RV Roof Vents - Tinted # FVK1020-19 is a confirmed fit for your series 8000 Fan-Tastic Vent Powered Vent. I've linked a video showing the replacement process for you to check out.
    view full answer...
  • Replacement Motor For Fan-Tastic Roof Vent With Model B2000RBT Motor
    The model number B2000RBT that you mentioned is the motor model number for the Fan-Tastic Roof Vent. If the fan only runs for a few minutes it sounds more likely that the fan motor is going out. First, it is a good idea to make sure you are getting adequate power to the fan. Check for any loose wiring and make sure you have a proper ground connection. I think your issue has to do with power to the motor or the motor itself because it is a common issue. If you check your wiring and everything...
    view full answer...
  • Why Would Trailer Roof Vent Leak Water
    If your Fan-Tastic Roof Vent is leaking it's going to be a sealant issue between the vent assembly and the roof of the trailer. So you'd need to have the base of the vent resealed to the roof with sealant like the part # 34427034145-1 and that will take care of the leaking issue. Where is the red blinking light exactly? Does the vent still seem to work like normal?
    view full answer...
  • Replacement Remote Control for my Fan-tastic Fan Model 6600
    This has come up before and when speaking with my contact at Fan-Tastic Vent regarding your model 6600 vent with the 417RF remote. She did confirm that the current model remote # FV9068-81 will not work with your vent model. The original remote for your vent is no longer available. In order to utilize a remote control, you will indeed need to upgrade the vent assembly to the Fan-Tastic Vent Roof Vent # FV807350.
    view full answer...
  • How to Disable the Rain Sensor on Fan-Tastic Fan FA3350 without Remote Control
    In order to disable the rain sensor on a Fan-tastic Vent # FV803350 without a remote you can hold the "up/down" button on the unit for 3 seconds as opposed to the remote. You should get a beep or a double beep to confirm the sensor shut off worked.
    view full answer...
  • Will Fan-Tastic Vent Roof Vent Work With Solar-Powered System
    Since you said your solar powered system is 12V, it would work great with the Fan-Tastic Vent Roof Vent, part # FV803350, as long as it provides at least 4 amps. This vent has a powered lift and a built-in rain sensor, and has 3 speed settings to let you control the air flow. This fan is designed for roofs up to 4 inches thick and the rough opening needed for installation is 14-1/4 x 14-1/4 inches.
    view full answer...
  • Replacement RV Roof Vent for Fan-Tastic Roof Vent 6500
    The Fan-Tastic Roof Vent 6500 you have fits the standard 14 inch square opening so for a replacement the # FV803350 would fit and work great. This has a large fan in it to move a lot of air, a thermostat, a powered lift, and a rain sensor that closes it whenever it rains.
    view full answer...
  • Fan-Tastic Vent Rain Sensor Light Stays On All the Time
    The rain sensor doesn't have to be activated. When it gets wet it will automatically close the vent lid. When it dries it opens back up. But it sounds like yours has a short that is causing that light to stay on all the time. In order to get the replacement rain sensor you would need upgrade kit # FV803358 which includes the sensor.
    view full answer...
  • Replacement Parts for Fan-Tastic Vent 8000 Series
    There is not a fuse we carry for the 8000 Series of Fan-Tastic vent. It does use a 4 amp slow blow fuse so to make fuse access simpler you can use In-Line Fuse Holder # C58470-1 and if you need to replace the bow-tie bracket, motor, and blade the correct part is Replacement Fan Motor Assembly Kit # FVK8017-00
    view full answer...
  • Operation of Rain Sensor and Automatic Fan on Fan-Tastic Vent Roof Vent FV803350
    Yes, the Fan-Tastic Vent Roof Vent # FV803350 has a rain sensor that will close when it rains or snows but then re-open once it dries. The fan will also automatically re-start once the dome has opened.
    view full answer...
  • Replacing or Repairing Rocker Arm on Fantastic RV Roof Vent
    When repairing or replacing the rocker arm like # FVK8011-05 on your Fan-Tastic Roof Vent, you shouldn't need to remove the entire fan assembly. Working from inside the trailer/RV and looking up into the unit, you should be able to first remove the screen. With the screen removed, you will want to remove the knob which is likely held in place with a screw. You may then need to remove a plastic tray which will give you access to the rocker knob. You can then see if anything has broke or...
    view full answer...
  • Replacement 3-Speed Fan Switch for Fantastic Vent RV Vent
    The replacement part you referenced, Replacement 3-Speed Switch for Fan-Tastic Vent Roof Vents # FVK1031-05, is the correct part for your Fantastic Vent RV Vent.
    view full answer...
  • How to Correct Squeak in Dometic Rain-Sensing RV Vent with Fan
    If your Airstream's Dometic powered vent has a visible accumulation of soils from regular use keeping the trailer free of cooking odors then you can certainly clean the fan blade and other accessible surfaces. It sounds like the squeak is coming from the fan motor itself, though, so for that I suggest a very light application of WD40 or a similar lubricant. If the squeak reliably stops after a moment or two then to be perfectly honest I would do nothing to the fan/vent other than clean...
    view full answer...
  • Troubleshooting Lid Lift Function on Fan-Tastic Vent FV803350
    If your Fan-Tastic Vent # FV803350 is getting 12V power to the fan motor but not to the lid's lift motor you'll want to test the wiring within the fan to find the point where power is lost. This is most easily done with a simple probe type circuit tester like # PTW2992. The tester will allow you to probe the lid wiring both before and after the lid lift switches to see if it is the switches that are blocking power to the lid motor. The only other probable cause for this issue is a defective...
    view full answer...
  • Solution for Needing Different Color Fan-Tastic Roof Vent Garnish
    Fan-Tastic vents only offers white garnishes with their vents like the # FV803350 so what you could do is get a spray that works on plastic and you could paint it to match your RV interior better.
    view full answer...
  • Troubleshooting Trailer Roof Vent that Blows Fuses When Lid is Lifting
    What roof vent assembly do you have? And what fuse is blowing? Is it on the vent or on the power wiring of the trailer/vehicle? Very easily could be a bad lift motor trying to draw too much amperage. If you have a Fan-Tastic roof vent the replacement lift motor would be # FVK6050-80.
    view full answer...
  • Lift Motor Replacement for Roof Vent Where Motor Runs After Lid is Closed
    Most likely you have an issue with the roof vent's lift motor. If you have a Fan-Tastic roof vent there are a couple options for replacement motors and to pick out the correct one you'll need to base it off of the shape of the plastic housing. Vents with a pear shaped plastic housing use: # FVK6050-80 Vents with a diamond shaped thumb slide use: # FVK6010-81 If you have a different brand of roof vent let me know what you have and I'll see what we can find as a replacement.
    view full answer...
  • Fan-Tastic Vent with Fan Replacement Assembly for 2001 Newmar Trailer
    There is not a direct replacement for that 6500 model which based on my research had the wall control that has been discontinued, however there are a couple of options that will fit in the exact same location and have the very similar features. I recommend the following options for your replacement vent: Fan-Tastic Vent Roof Vent w/ 12V Fan and Remote - Powered Lift # FV807350. This model has the remote, thermostat, and 13 fan speed options whether regulated by the thermostat or...
    view full answer...
  • Troubleshooting Fan-Tastic Roof Vent FV803350 That Doesn't Open Or Close
    First thing you will want to check is that the fan has power and is grounding properly. You can try using jumper wires to the vent wiring that are run to known ground and power to see if that works. Next, you can check the fuse of the fan to make sure it is not blown. Near the speed setting is a plug that holds a 4 amp fuse. I attached a picture that points out where it is. If the fan still works when you manually open the lid that would indicate a problem with the lid motor. Since...
    view full answer...
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  • Replacement Thermostat-Regulated Ceiling Vent for 2005 Holiday Rambler Presidential
    For your Ventline Northern Breeze vent fan with thermostat, we don't have a wiring diagram or any parts. However, if you are looking for something similar to replace it, we do have the Fan-Tastic Vent Roof Vent w/ 12V Fan and Thermostat - Powered Lift - 14-1/4" x 14-1/4" # FV803350. We also have the Fan-Tastic Vent Roof Vent w/ 12V Fan and Remote - Powered Lift - 14-1/4" x 14-1/4" # FV807350 that has 13 automatic, thermostat-regulated settings to conserve energy.
    view full answer...
  • Fan-Tastic Vent Fan FV803350 Compatibility with Existing RV Wall Switch
    You should be just fine replacing your two roof vents with the Fan-Tastic Vent Roof Vent # FV803350 since these fit the standard 14-1/4 x 14-1/4-inch RV roof opening size. Since you are replacing two 12V powered vents with two similar units your existing switch should work but the air direction and thermostat functions will be operable on the new fan units themselves. If you want to check it for an amperage rating that's not a bad idea. Each of the Fan-Tastic Vent Roof Vents # FV803350...
    view full answer...
  • Adapter Recommendation for Powering Fan-Tastic Roof Vent with 110 AC Power
    Fan-Tastic Vents actually makes an adapter for a very similar situation. What you'd want is the # FV1101-09 which is normally used with their box fan but would work well with the fan # FV803350 as well. The power rating of the adapter is 1.5 amps at 110 volts which is more than enough for 4 amps at 12 volts.
    view full answer...
  • Replacement Motor Recommendation for a Fantastic Roof Vent
    The correct replacement motor for the Fantastic Vent part # FV803350 that you referenced is the part # FVK6050-80. The price is below at the product link.
    view full answer...
  • Solution for Fan-Tastic Roof Vent 2000 BTS-B that Has Broken Motor Mount
    Your Fan-Tastic roof vent is old enough that we don't have the individual part you are looking for so the best option we have would be the Fan-Tastic Vent Roof Vent Assembly Upgrade # FV807357 which would replace what you have with the current Fan-Tastic powered lift setup with a fan.
    view full answer...
  • Replacement Roof Vent Lid for Fan-Tastic Roof Vent # FV803350
    The correct replacement vent lid for the Fan-Tastic Roof Vent part # FV803350 that you referenced is the part # FVK1020-19. In the review video link I attached you can see the install process as well.
    view full answer...
  • Remote Compatible with Roof Vent with Fan and Powered Lift
    The Fan-Tastic Vent Roof Vent w/ 12V Fan and Thermostat - Powered Lift - 14-1/4" x 14-1/4" # FV803350 unfortunately does not have a receiver so a remote for that fan/vent is not an option. You can hardwire it to a switch, but that only will give you the fan speed or power options. To get the remote feature you would need one of the following vents: Fan-Tastic Vent Roof Vent w/ 12V Fan and Remote - Powered Lift - 14-1/4" x 14-1/4" # FV807350 MaxxFan Deluxe Roof Vent w/ 12V Fan, Thermostat,...
    view full answer...
  • Fan-Tastic Vent Roof Vent with Fan and Thermostat Amperage Draw
    I reached out to the manufacturer and the techs don't have that amperage for each speed of the Fan-Tastic Vent Roof Vent w/ 12V Fan and Thermostat # FV803350. They said that at start-up the fan will pull 3.5 amps but running will remain well under that amperage. The unit has a slow blow 4 amp fuse so it will not pull minimal amperage at 12V for continued operation.
    view full answer...
  • 3-Speed Non-Thermostat Fan-Tastic Roof Vent Recommendation that is 14 inch by 14 inch
    Sounds like you are looking for the part # FV801200. This is a very similar roof vent to the part # FV803350 you referenced at a lower price point that does not have the thermostatic features. I attached a review video for this vent for you to check out as well.
    view full answer...

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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Michael H
Expert Research:
Michael H
Employee Jameson C
Expert Research:
Jameson C
Employee Adam R
Expert Research:
Adam R
Employee Jeffrey L
Expert Research:
Jeffrey L
Employee Cole B
Installed by:
Cole B
Employee Lisa S
Written by:
Lisa S
Employee Leah S
Updated by:
Leah S
Employee Shelly K
Updated by:
Shelly K
Employee Adam Y
Updated by:
Adam Y

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