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  6. Tinted
MaxxAir II RV and Trailer Roof Vent Cover - 22-3/4" x 18-1/2" x 9-3/8" - Smoke

MaxxAir II RV and Trailer Roof Vent Cover - 22-3/4" x 18-1/2" x 9-3/8" - Smoke

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MA00-933073 - Vent Cover MaxxAir Roof Vent
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Roof vent cover provides increased airflow with a larger vent area than standard vent covers and side louvers that create cross-ventilation. Hinged brackets allow cover to be opened and closed with ease. Includes all hardware needed for installation. Lowest Prices for the best rv vents and fans from MaxxAir. MaxxAir II RV and Trailer Roof Vent Cover - 22-3/4" x 18-1/2" x 9-3/8" - Smoke part number MA00-933073 can be ordered online at etrailer.com or call 800-298-8924 for expert service.
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  • Reviews (206)
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  • Used (1)
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MaxxAir RV Vents and Fans

  • Roof Vent
  • Vent Cover
  • MaxxAir
  • 18-1/2W x 22-3/4L Inch
  • Tinted

Roof vent cover provides increased airflow with a larger vent area than standard vent covers and side louvers that create cross-ventilation. Hinged brackets allow cover to be opened and closed with ease. Includes all hardware needed for installation.


  • Roof vent cover for your RV or camper enables you to open the vent and operate the fan in any weather
    • Allows air to circulate at all times, even when you're away or sleeping
    • Keeps rainwater from entering and damaging RV interior
    • Prevents heat buildup
  • Large vent area on the back of the cover maximizes airflow
    • Angled louvers allow smoke, odors, and stale air to escape
    • Side vents create cross-ventilation
    • Twice the size of vent area on standard covers
  • Hinged brackets make it easy to open and close the cover for roof vent maintenance - no tools needed
    • To open, pull snap-lock pins out of hinges
    • To close, slide pins in and push them down to lock in place
  • Compatible with high-powered, low-speed fans
    • Including MaxxFan vents and certain MaxxFan Plus, Fan-Tastic Vent, and Ventline vents
  • Removable bug screen behind the vent area helps keep out insects and debris
  • Durable, high-density polyethylene construction is UV resistant
    • Translucent material lets some light through
  • Sleek, aerodynamic design reduces wind resistance
  • Simple installation over roof vent with no need to drill into the roof of your RV or trailer
    • Mounts on frame of roof vent - drilling may be required
    • Includes all hardware needed for installation
  • Smoke color
  • Made in the USA


  • Application: designed to fit over most standard 14" x 14" roof vents
    • Can be used with high-powered, low-speed (3- or 4-speed) fans
  • Overall dimensions: 22-3/4" long x 18-1/2" wide x 9-3/8" tall
  • Inside dimensions: 21-1/2" long x 18-1/2" wide x 6" tall
  • Vent area dimensions: 18" wide x 7-3/4" tall
  • 6-Year limited warranty

Measurements of Mounting Points for MaxxAir II

Note: Some vents may not open fully when used with this vent cover. If opened 50% or more, the vent will still achieve maximum airflow.

Install this cover over your roof vent so that the vent can be opened and the fan can be operated in any weather. This prevents heat from building up inside your RV or trailer while keeping rainwater and debris out. The MaxxAir II has a large vent area that maximizes airflow and allows for cross-ventilation. And a removable bug screen behind the vent area helps prevent insects from getting in. Hinged brackets make it easy to open and close the cover for roof vent maintenance.

Large Vent Area and Side Louvers

MaxxAir II Large, Louvered Vent

The MaxxAir II has a vent area that is twice the size of the vent area on standard covers. This provides more airflow in and out of your RV or trailer. The angled louvers allow smoke, odors, and stale air to escape while keeping rain and debris out. And the louvers on the sides provide cross-ventilation for even more airflow.

Hinged Brackets for Easy Opening

MaxxAir II Cover Installed

The aluminum mounting brackets on the MaxxAir II are hinged. These hinges allow you to easily open and close the cover for cleaning and maintenance of your roof vent. No tools are needed. To open the cover, simply pull the snap-lock pins out of the brackets on one side of the cover. When maintenance is completed, close the cover and slide the pins into the hinges. Then push the pins down to lock them in place and secure the cover.


There's no need to drill into the roof of your trailer when installing the MaxxAir II because the vent cover mounts to the frame of your roof vent. Simply drill 4 holes into the vertical frame of your roof vent so that you can install the hinged mounting brackets. These holes will be hidden underneath the vent cover once it is installed, where they will be protected from the elements.

Stainless steel screws, nuts, and washers are included to install the cover over your roof vent. However, if you're installing this cover over a high-powered, 3-speed or 4-speed ventilation fan, use the included self-tapping screws to mount the cover instead.

Durable Construction

MaxxAir II Cover Installed

This vent cover is constructed of durable, high-density polyethylene. Special additives help ensure that the material can resist the negative effects of UV rays. And the cover is translucent so that some natural light can shine through.

00-933073 Max Air 2 Camper Roof Vent Cover - Smoke

Replaces 67278

Item # MA00-933073

Installation Details MA00-933073 Installation instructions

Customer Reviews

MaxxAir II RV and Trailer Roof Vent Cover - 22-3/4" x 18-1/2" x 9-3/8" - Smoke - MA00-933073

Average Customer Rating:  4.8 out of 5 stars   (206 Customer Reviews)

Roof vent cover provides increased airflow with a larger vent area than standard vent covers and side louvers that create cross-ventilation. Hinged brackets allow cover to be opened and closed with ease. Includes all hardware needed for installation.

- MA00-933073

Easy to install and they really make a difference by being able to keep our vents open regardless of weather. 921360

- MA00-933073


- MA00-933073

The vent cover arrived safely and is exactly what I was expecting. The price was very good and the service was great. 913206

- MA00-933073

great and prompt service as always thank you 913067

- MA00-933073

I highly recommend this product and etrailer.com. The service is nothing short of magnificent 912867

- MA00-933073

Easy ordering, and great product 882362

- MA00-933073

good product 852660

- MA00-933073

I don't have the fan just the cover and it works great so far. One yr in and zero leaks. It's over a solar fan I had to modify but it works beautifully. I do wish there would of been a true clear but oh well. 824080

- MA00-933073

Fairly simple to install. No new holes in the roof. Good air flow. 819505

- MA00-933073

This is a great cover. Like how it is attached with clips on one side. Makes it easy to clean the vent cover. 732983

This is a great cover. I like how it attaches with clips to remove it to clean under it.
Al W - 12/18/2020


- MA00-933073

very happy with it, exactly what was ad vertised 691739

- MA00-933073

Arrived within a couple days. Installation instructions were clear. Easy to install. I would recommend These vent covers and trailer. 680427

- MA00-933073

Works great and was easy to install no more worries about leaving the vent cover open in rain or driving 667261

- MA00-933073

This is my second trailer that I have installed this product on. I highly recommend it. I live in the Northwest where we get a lot of rain and this is the best answer to ventilation in a wet climate I have found. etrailer was (as they say in their advertising) the best price I found while researching the internet. 647842

Still looks like new after one year outdoors. Works as well as it looks.Second trailer I have had with this. Wouldnt be without it.
Jim - 05/26/2020


- MA00-933073

These work great and were very easy to install! 627787

- MA00-933073

This is exactly the item I needed, I have these on my Fantastic fan vents and they allow good air flow. I ordered this cover to replace one that I broke while washing my roof(I'm a little clumsy) These are expensive but required if you want your roof vents open in rainy weather 611859

- MA00-933073

Happy with the vent cover and service. 583944

Seth V - 11/20/2019


- MA00-933073

We ordered 2 Maxx Air RV vent covers. This was our first order and Helen was a great help with our order. The order of 2 units came with one cracked. I called etrailer who shipped out a new one in 2 days. Julie was also a great help with the return. The products are installed on the RV . The covers are really sharp , durable, and installed with ease. They should let us leave the vents open during inclement weather. Great product and customer service. We will use etrailer in the future . Thanks 579731

- MA00-933073

Very very quick shipping n great quality. Thank you! 577585

- MA00-933073

Well built, fairly easy to install (and I'm not mechanically inclined), has the bug screen installed and all the hardware needed. I'm not sure why you would want the 'made for the Maxxair fan' specific model that costs $20 more and doesn't come with the bug screen. This one works with the Maxxair fan and the fan has the holes pre-drilled. I'll buy this product again. Thanks etrailer for the great service and product at a competitive price! 577023

- MA00-933073

Right on target! Extremely fast delivery! These guys are on it! Very happy repeat customer! Great Product, easy installation. 572116

- MA00-933073

Great product. Made in USA. Shipped in proper packaging and on time. Great place to do business! 571544

- MA00-933073

Was exactly what I ordered in perfect condition. I will definitely order more items for my RV from ETrailer. Well done 562577

- MA00-933073

Always enjoy doing business with this company, the delivery is fast and the products are top notch. 558427

- MA00-933073

Recently ordered 2 maxxair 2 vent covers. In trying to remove their stick on label and masking tape with a hair dryer I ruined the finish on both covers,the glue would not come off. Maxxair has not returned my call about anything I can do to repair the finish. Not your responsibility I know, but just letting you know 551793

Ive used product like Goo Gone in the past to remove residual glue from stickers off of plastic with pretty good results. Be sure to follow the directions on the package.
-- Mike L - 08/10/2018

Show More Reviews

Ask the Experts about this MaxxAir RV Vents and Fans

  • Recommended MaxxAir MaxxFan Plus Vent Cover
    For your MaxxFan Plus Roof Vent w/ 12V Fan, Thermostat, and Remote # MA00-04500K, the MaxxAir FanMate Rain Cover is your best fit for fully functionality. These come in 3 colors: Smoke # MA00-955003 White # MA00-955001 Black # MA00-955002 This will allow your vent to fully open and not come in contact with the cover as they are designed for compatibility.
    view full answer...
  • Can I use MaxxAir Vent Cover for Fan-tastic Fan
    I do not recommend using the MaxxAir Vent cover with the Fan-tastic vent fan because the cover is not tall enough. Most Fan-tastic vent fans are 11-1/2 inches tall when the lid is open. The MaxxAir vent cover is 9-3/8 inches tall. It will technically cover the fan-tastic fan but it does not allow the fan lid to open as much as the Fan-tastic cover would. The Fan-tastic cover in smoke part # FVU1500GR is 10-1/4 inches tall, so it still does not allow for the Fan-tastic vent lid to fully...
    view full answer...
  • Will Fan-Tastic Roof Vent with Automatic Lid Work with Vent Cover
    This question comes up pretty often but when we've spoken with our roof vent manufacturers they've told us that the lid will stop trying to open if it encounters resistance so the lid will still open far enough to function.
    view full answer...
  • Maxxfan 4900k Rain Cover Recommendation
    I did some checking and for your MaxxFan 4900K vent the MaxxAir II RV and Enclosed Trailer Roof Vent Cover # MA00-933073 that you referenced is a confirmed fit.
    view full answer...
  • Differences Between MaxxAir 2 and MaxxAir Standard Vent Covers
    I spoke with my contact at MaxxAir regarding the MaxxAir 2 Vent Covers like the Smoke # MA00-933073 that you were looking at and the Standard Covers like # MA00-933067. He said there are two primary differences between the two models. The first is that the standard unit is a bit smaller at 19 inches long compared to the 22-3/4 inch length on the MaxxAir 2. The other difference is that the MaxxAir 2 cover features hinges at the bottom that allow you to lift the cover up for easy cleaning...
    view full answer...
  • What is Difference Between MaxxAir II RV Vent Cover # MA00-933073 and # MA00-955003
    The difference is that the MaxxAir II RV and Enclosed Trailer Roof Vent Cover # MA00-933073 is just the better all-around option over the MaxxAir FanMate Rain Cover # MA00-955003. It fits more vents, flows more air, and is priced better so it's the best choice. Check out the review video for more info as well.
    view full answer...
  • Roof Vent Cover Recommendation for 2016 Keystone Fuzion with Fan-Tastic Roof Vent
    For Fan-Tastic roof vents we have covers designed specifically for them like the # FVU1500BL which is a fit for all of the Fan-Tastic roof vents.
    view full answer...
  • Will MaxxAir 4951KS Lid Open All the Way when Using MaxxAir II Vent Cover
    The MaxxAir vent cover # MA00-933073 will allow MaxxFan and MaxxFan Plus models to open all the way. However for those models the FanMate cover is recommended, # MA00-955003. I have linked a couple of videos on the FanMate cover for you.
    view full answer...
  • MaxxAir Vent Cover for a Ventline E-Z Lift Roof Vent
    For the Ventline E-Z lift vents you will need to use a regular MaxxAir vent cover, # MA00-933067. As you have found the MaxxAir II covers are not a direct fit. I have linked a video review for you.
    view full answer...
  • Rain Cover Recommendation for MaxxAir MaxxFan Plus MA00-933073
    The MaxxAir II RV and Enclosed Trailer Roof Vent Cover # MA00-933073 that you referenced can be used with the MaxxAir MaxxFan Plus # MA00-04500K that you are interested in. You may know this already but the # MA00-04500K comes with a rain sensor that will automatically close the lid of the vent whenever rain is sensed.
    view full answer...
  • Smoked Version of the MaxxAir II Vent Cover
    We have the part # MA00-933073 which is a smoked MaxxAir II vent cover like you are looking for.
    view full answer...
  • Can Vent Lid be Left Open While Driving if Using MaxxAir II RV and Enclosed Trailer Roof Vent Cover
    Technically, you could drive with the vent open using MaxxAir II RV and Enclosed Trailer Roof Vent Cover # MA00-933073 though that is not what it was designed for. There would still be significant air flow getting through the cover so you would still have the same potential issues associated with driving with a vent open without this cover. Strong enough winds could damage the vent lid and there is always the possibility of debris flying into it.
    view full answer...
  • Can MaxxAir II RV and Trailer Roof Vent Cover Fit on Heng's Trailer Roof Vent
    Yes, the MaxxAir II RV and Trailer Roof Vent Cover # MA00-933073 that you referenced will fit over the standard Heng roof vent you have on your trailer. Due to the height of this (and other similar vent covers) you won't be able to fully open the roof vent but with roof vents the lid doesn't have to be fully opened to get full air flow. I attached a review video for this vent cover for you to check out as well.
    view full answer...
  • Comparing MaxxAir II and MaxxAir FanMate Roof Vent Covers
    Aside from the MaxxAir II having inside dimensions of 21-1/2" long x 18-1/2" wide x 6" tall and the FanMate having inside dimensions of 26-1/2" long x 16-3/4" wide x 9-1/2" tall, the MaxxAir II comes with a bug screen but only 2 of the 4 mounting points use clips that can easily be removed. The FanMate doesn't come with a bug screen (but one can be added with part # MA00-955202 Black or # MA00-955203 Smoke) and it comes with 4 easily removable clips. I have attached video reviews for both...
    view full answer...
  • Replacement Screens for MaxxAir II Vent Covers
    There are replacement screens for your MaxxAir II Vent Covers: - Replacement Bug Screen for MaxxAir II RV and Trailer Roof Vent Covers # MA10-20121 This screen is the correct replacement for the MaxxAir II RV and Trailer Roof Vent Cover # MA00-933072 (White), # MA00-933073 (Smoke), # MA00-933075 (Black). You mentioned screen retainers, though I could not find any reference to that; the only other replacement part for these vent covers is the Replacement Installation Hardware for...
    view full answer...
  • Maxxair Vent Cover Recommendation that Lets More Light In
    For a MaxxAir cover that would let more air in you would need the part # MA00-933073 which has a translucent smoke finish. We don't offer without the mounting hardware but realistically even if we did the price wouldn't be that much better since the mounting hardware is pretty minimal.
    view full answer...
  • Cover for a MaxxAir 4500k Roof Vent
    For the MaxxAir MaxxFan Plus vents you can use the MaxxAir II cover # MA00-933073. It is 22-1/8" long x 20-1/8" wide x 9-3/8" tall.
    view full answer...
  • Will Black MaxxAir II RV Roof Vent Block Light Better Than the Smoke Vent
    The Black MaxxAir II RV and Enclosed Trailer Roof Vent Cover # MA00-933075 is a solid black. I went out to our warehouse with a flashlight to see how much light would pass through. Other than the vented part no light came through at all. Now, my flashlight isn't quite as bright as the sun but I'm confident it will block considerably more light than the Smoke, # MA00-933073
    view full answer...
  • Best Roof Vent Cover for a MaxxAir Vent Fan 4500 Model
    The MaxxAir II Trailer Roof Vent Cover and MaxxAir FanMate Vent Cover will both fit your MaxxAir Vent Fan 4500 Model. If you have the Plus then there will be standoffs on the top of the vent that will be used to snap the cover in place but if you do not have these standoffs then it comes with the other hardware you need. I have attached the compatible options for you below. MaxxAir II Trailer Roof Vent Cover (White) - part # MA00-933072 MaxxAir II Trailer Roof Vent Cover (Black) -...
    view full answer...
  • Enclosed Trailer Roof Vent Cover Needed for a MaxxAir 4-Speed MaxxFan
    Since the MaxxAir 4-Speed MaxxFans # MA00A04301K and # MA00A04401K have the tabs on the side you need a MaxxAir II cover that mounts directly to the tabs. We have these in White # MA00-933072, Black # MA00-933075, and Smoke # MA00-933073 depending on what you would like for your vent. Please note that these will fit but may not allow your vent to open completely.
    view full answer...
  • Max Roof Vent Cover Opening for RV's
    I spoke to my contact at MaxxAir and they informed me that they do not make a vent cover that will allow a roof vent to open the full 12". They were also unaware of another manufacture who does as the 10" height of most roof vent covers is more or less an industry standard. I recommend using the MaxxAir II RV and Enclosed Trailer Roof Vent Cover part # MA00-933072 for white, part # MA00-933075 for black, or part # MA00-933073 for smoke. This roof vent cover will allow for you to open...
    view full answer...
  • Recommended Vent Replacement for 2000 TPD Vortex Car Hauler
    For your manual vent, I recommend the Ventline Ventadome Trailer Roof Vent - Manual - 14-1/4" x 14-1/4" - Smoke # V2092SP-29. This is a customer favorite as it fits the standard size often referred to at 14 x 14 inches. This vent is very well made and installs easily using kit # 344270KITW. I've attached a video to assist. For the vent cover, I recommend the MaxxAir II RV and Enclosed Trailer Roof Vent Cover - White # MA00-933072 or black # MA00-933075 which will work well with this...
    view full answer...
  • Replacement Vent Cover For A Maxxfan 7500
    Yes, I would agree with your suggestion. The MaxxAir II RV and Trailer Roof Vent Cover # MA00-933075 would be a great solution, providing additional protection from moisture but also allowing use when you can't get out in a rainstorm for example. Part # MA00-933073 is also an option available in smoke instead. Included is a video review for additional information.
    view full answer...
  • Recommended Maxxfan Vent Rain Cover
    For your Maxxfan, I recommend the MaxxAir II RV and Trailer Roof Vent Cover - 22-3/4" x 18-1/2" x 9-3/8" - White # MA00-933072, Smoke # MA00-933073, or Black # MA00-933075. These covers are designed to work specifically with Maxxfan vents but can be compatible with others. If you have a high powered/high speed Maxxfan, then you instead would use the MaxxAir FanMate RV and Trailer Roof Vent Cover - 25" x 18-1/8" x 10-1/4" - Black # MA00-955002, Smoke # MA00-955003, or White # MA00-955001.
    view full answer...
  • Recommended Vent Cover To Mitigate Water Leaks In Vents
    Extremely heavy winds can cause leaks around the vent, but this is incredibly rare. Normally a leak will be from a crack in a lid that needs replaced. We have vent lids to replace damaged ones like # BVD0449-A01. There are different styles of hinges, to choose from, so you want to make sure you are replacing one if the correct hinge style. If you would like to mitigate the water from winds I recommend a vent cover like # CAM40431 or # MA00-933073. These covers install over the vent...
    view full answer...

Used Items Available

Condition: Surface Scratches

Notes: Cover assembly has scuffs and scratches on the top in the very center. Cosmetic damage only, will not affect the function of product

Our Price: $50.32
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Info for this part was:

Video Edited:
Zack K
Expert Research:
Michael H
Expert Research:
Jameson C
Installed by:
Cole B
Updated by:
Mary E
Written by:
Jacob W

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