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  6. 6W x 8L Inch
2-Piece Polypropylene Trailer Vent for 3" Diameter Hole - Black

2-Piece Polypropylene Trailer Vent for 3" Diameter Hole - Black

Item # HMAV2-AVT2
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HMAV2-AVT2 - Black Redline Vents
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This 2-piece vent provides an inexpensive yet attractive way to ventilate your enclosed trailer. Round interior vent and half-moon-shape exterior piece are both constructed of black, UV-resistant polypropylene plastic that holds up to sun exposure. Call 800-298-8924 to order Redline enclosed trailer parts part number HMAV2-AVT2 or order online at etrailer.com. Free expert support on all Redline products. Guaranteed Lowest Price and Fastest Shipping for 2-Piece Polypropylene Trailer Vent for 3" Diameter Hole - Black. Enclosed Trailer Parts reviews from real customers.
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Redline Enclosed Trailer Parts - HMAV2-AVT2

  • Vents
  • Wall Vent
  • No Fan
  • Redline
  • 6W x 8L Inch
  • Black

This 2-piece vent provides an inexpensive yet attractive way to ventilate your enclosed trailer. Round interior vent and half-moon-shape exterior piece are both constructed of black, UV-resistant polypropylene plastic that holds up to sun exposure.


Features:

  • Affordable trailer vent provides continuous ventilation for your enclosed trailer
    • To increase ventilation, you can install more than 1 vent
  • 2-Piece design creates a low-profile vent that's attractive both inside and outside your trailer
  • Half-moon piece with flat, slotted side attaches to trailer's exterior
    • Slots are on one side only, allowing you to position the vent for best airflow and to help prevent water from getting in
    • Drain holes at the corners let out any water that does get in
  • Round, slotted interior piece installs inside your trailer
    • You can easily trim vent tube to fit thin walls
  • UV-resistant, polypropylene plastic construction stands up to the elements
  • Black color
  • 9 Screws and sealant (sold separately) required for installation


Specs:

  • Fits 3" diameter hole in enclosed trailer
  • Exterior half-moon piece
    • Overall dimensions: 8" long x 6" wide x 1-1/4" tall
    • Flange width: 1/2"
  • Interior circular piece
    • Diameter at flange: 4-1/8"
    • Vent tube outside diameter: 2-15/16"
    • Tube depth: 1-1/2"
    • Flange width: 5/8"


HMAV2-AVT2 Alliance 2-Piece Enclosed Trailer Vent - UV Resistant Polypropylene Plastic - Black






Customer Reviews

2-Piece Polypropylene Trailer Vent for 3" Diameter Hole - Black - HMAV2-AVT2

Average Customer Rating:  4.8 out of 5 stars   (136 Customer Reviews)

This 2-piece vent provides an inexpensive yet attractive way to ventilate your enclosed trailer. Round interior vent and half-moon-shape exterior piece are both constructed of black, UV-resistant polypropylene plastic that holds up to sun exposure.

- HMAV2-AVT2
by:

Purchase was simple and shipping was fast. I placed the vents of the right and left side with little or not issues and sealed as per instruction. If I was to make a recommendation I would suggest placing a tube of sealant in the vent. But, then you may have issues with color, etc. for customers. 352124



- HMAV2-AVT2
by:

I bought a pair of these to vent my 6 X 10 cargo trailer. They worked great ! 431246


Comments
I have sold the trailer. While I did have it, though, the vents worked very well.
Johnny B - 09/12/2018

43499

- HMAV2-AVT2
by:

The product seems to be well made and I believe installation will be easy. The only down side is if you are installing it onto any surface that is not at least 1.25" thick, you will need to take up the extra space. This is usually not the case with a trailer wall but is in my case of a composite molded wall of a walk in storage pod. I recommend a finer screen be cut and siliconed onto the molded grate to keep out smaller insects but that is an easy upgrade. 224935



- HMAV2-AVT2
by:

Excellent product and easy to work with. Great service. I was concerned however about insects entering through the vents so came up with a filtration system. Used a PVC coupling and some filter material. Cut the coupling to 1/2 inch rings and remove just enough material to allow an inside press fit. Cut round filter and insert first then hold in place with the ring. On the outside vent cut a long narrow piece as shown. When installed as shown, adds very good double filter and allows air to move freely. Just finished a 6000 mile trip clear across the country and back and filter performed perfectly. Eliminating the heat build up AND keeping the bugs out. JIM : ] 102260


Comments
I really like this idea and thanks for taking the time to document and post this info. What is the blue filter material, where did you find that and how is it secured to the external vent piece?Best regards.
-- comment by: Herb L - 08/02/2014

6023

- HMAV2-AVT2
by:

We use these on every trailer we make, very good heavy duty vent, attractive, adds a design element to the trailers. We use both black and white vents, depending on the side color of the trailer. Yes, we are kind of trailer nerds! And we do love e-trailer! 524150



- HMAV2-AVT2
by:

Just finished installing my new vents, very easy to install and look pretty good as well, hopefully they serve they're purpose. Any ventilation is better than none. 413321



- HMAV2-AVT2
by:

Another review (above) recommended using a plywood jig. I took their advice and was glad I did. They did not include images, so I am. It made the install SUPER easy. 1) Use a scrap piece of 1/2 or 3/4" plywood slightly larger than the exterior vent. Find center of plywood and use 3" hole saw to make opening. Insert the round interior vent (loosely) from one side, and then loosely attach semi-circular exterior piece. Pinch all three pieces together and set on a flat surface. Trace the outline of the semi-circular vent onto the plywood. Make marks at the 6 screw hole openings. 2) Drill through plywood at the 6 screw openings. 3) locate vent position on exterior of trailer (note: make sure the shape of the vent corresponds to the flow of air!!!). 4) place plywood jig at desired loaction (press against exterior of trailer) and drive at least 4 self-tapping screws through plywood and into trailer wall (make sure to use screws long enough to penetrate thickness of plywood). 5) now that plywood is attached to exterior of trailer, use a hole saw to cut through metal and plywood interior wall. The jig will keep your saw in perfect path. 6) Apply silicon to inner rim of 3" round interior vent cover. Press into opening. 7) My interior vent was the perfect depth - It was flush with exterior of trailer wall. If yours is too long, cut to proper depth. Apply silicon at seam where metal opening meets end of interior vent (added protection against rain). 8) Add silicon bead on underside of exterior vent flange. Align with screw holes (from jig attachment) and drive 6 self-tapping screws. Good luck! 240227



- HMAV2-AVT2
by: 09/16/2020

881698



- HMAV2-AVT2
by:

Easy ordering. Fast delivery. Web site easy to use. Highly recommend shopping through etrailer.com 878082



- HMAV2-AVT2
by:

Perfect replacement for the broken one I had. Fast delivery. Exceeded expectations. 866756



- HMAV2-AVT2
by:

866346



- HMAV2-AVT2
by:

No complaints. I'm not sure how efficient the air transfer it through this vent, but it was easy enough to install, and has been water tight. It's installed to vent my battery compartment through the rear of my teardrop trailer. 848983



- HMAV2-AVT2
by:

Ticks all of our boxes for passive air flow. Have been using them in our trailers for years now. We use two per teardrop, one on each side of the trailer for cross ventilation. 836982



- HMAV2-AVT2
by:

Arrived quickly, easy to install. Finally have a little circulation in the camper!! 827868



- HMAV2-AVT2
by:

We use two of these vents on every trailer that we make, and are nothing but happy with the condition, the price and the functionality of it. Such a simple concept that just works so well for some additional ventilation. 815463



- HMAV2-AVT2
by:

great service, part was just as expected 749547



- HMAV2-AVT2
by:

Great price and quality, as good if not better than original part. 737167



- HMAV2-AVT2
by:

very good quality, easy installation, I have bought for another install already. 713539


Comments
It is difficult to measure the difference but I also installed a roof vent I leave open, overall a great combo
Bryan - 09/23/2020

100346

- HMAV2-AVT2
by:

Good design, well manufactured, easy to install. A1 product. 705056



- HMAV2-AVT2
by:

Not so Impressed. There doesn't seem to be much better airflow in my trailer. I installed 4 vents. The way the product is designed seems to block air from coming instead of letting it flow. 676956


Comments
They dont seem to help much at all to be honest. 4 vents and still hot in the trailer.
Mirabify - 07/27/2020

95498

- HMAV2-AVT2
by:

Just like the factory vents. 675571



- HMAV2-AVT2
by:

Easy to install and works great! 673568



- HMAV2-AVT2
by:

worked awesome, no problems at all. 667653



- HMAV2-AVT2
by:

look good 662858



- HMAV2-AVT2
by:

I did not go wrong buying this item. Very good for venting tight closed compartments. 630831


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Ask the Experts about this Redline Enclosed Trailer Parts

  • Recommended Roof Vent for Package Delivery Van
    The # HMAV2-AVT2 vent you had looked at is really intended to be mounted to the sidewall of a structure rather than the roof. It's fairly low profile, so it could work in that application, but while the vehicle is standing still, there's a good possibility that you could get some water infiltration during a downpour. Something like the MaxxAir Mini Trailer Roof Vent, part # MA00-03750 would be a better choice. The vent includes a rain shield that prevents rain from entering as well as...
    view full answer...
  • Recommended Installation Point for Redline 2-Piece Polypropylene Trailer Vent HMAV2-AVT2
    The Redline 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2 is suitable for front- and rear-of-trailer installation as you describe. The vent is designed to allow any water that does get in to exit through the drainage holes in the corners. The exterior portion's half-moon shape provides protection from moisture entering the trailer while still allowing good air flow to keep your trailer's interior cooler as you drive. Keep in mind that the hot air in the trailer will be at the top near...
    view full answer...
  • Does the 2-Piece Polypropylene Trailer Vent have to Be Installed Facing a Certain Direction
    There isn't really a specific way that the 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2 has to be mounted. You could mount it like in the pictures or in any other orientation. It's just that with the openings pointed down it is much less likely that rain water could get inside the trailer.
    view full answer...
  • Will Adding a Trailer Vent Reduce Condensation
    It would seem to me that having an air vent and a fan vent is going to be sufficient, but you can always add another vent to help improve airflow. With that being said, you can add the 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2 to provide you with a bit more airflow, but I'd be careful not to place it too low to the ground since it might allow rodents an easier route into the trailer. I don't believe that a vent is going to help reduce condensation and would let more moist air inside...
    view full answer...
  • Installation Hardware for Trailer Vent HMAV2-AVT2
    To install the 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2 you will need 9 screws, either the Zinc Sheet Metal Screw # 31071 or Wood Screw # 30587 as well as Sealant # 0160297. I've added links to video reviews of these products for you to take a look at as well.
    view full answer...
  • How To Keep Bugs Out Of The Trailer Using the 2-Piece Polypropylene Trailer Vent HMAV2-AVT2
    I do have an option for you but there is not an additional mesh screen for the 2-Piece Polypropylene Trailer Vent for 3" Diameter Hole part # HMAV2-AVT2 to keep out bugs/insects. The large vents that you see will keep out the majority of bugs and insects but some of the smaller ones can slip through. In order to prevent this you can simply take a finer mesh screen of your own and place it in between the trailer and vent. For example, we have the Bug Screen for Fan-Tastic Vent Ultra Breeze...
    view full answer...
  • Wall Vent Recommendation for Enclosed Trailer
    The largest side wall vent we have for trailers is 3 inch diameter like the part # HMAV2-AVT2 that you referenced. These do an excellent job venting out hot air in enclosed trailers. I'd install them higher on the walls since hot air rises and probably at the back of the trailer. I'd start with maybe two and see if you like how they perform and add more if you need it. For most people just a pair of these is all that's needed. I attached an install video for this for you to check out as well.
    view full answer...
  • Recommended Direction for Installing 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2
    I recommend having the vent opening of the 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2 either face the rear of the trailer so that it sucks air out as you are traveling or have it face down as either of these two positions will prevent water from entering into the trailer.
    view full answer...
  • Availability of Side Vents for Toy Hauler Trailer
    For trailer side vents we have a couple options but none that are 9 inch by 9 inch. We have the part # 9139 which is 10 by 12 inch and the part # HMAV2-AVT2 which is more of a semi-circle shape that is 6 by 8 inch.
    view full answer...
  • Do Half Moon Trailer Vents Need to be Installed Facing Down or Back
    You can install the 2-Piece Polypropylene Trailer Vent for 3" Diameter Hole - Black # HMAV2-AVT2 in whatever manner suits you best; some people install it so the half-moon is facing to the rear though most do it with the half-moon facing down. I have added photos that our customers sent in showing both instances. This is one of those instances where there really isn't a "right" answer because you can install it wherever you think will give you the most ventilation and both corners have...
    view full answer...
  • Will 2-Piece Polypropylene Trailer Vent Cover 4 inch Diameter Hole
    The outer portion of the 2-Piece Polypropylene Trailer Vent for 3" Diameter Hole # HMAV2-AVT2 that you referenced would easily fit over a 4 inch diameter hole like you mentioned. The inner section does require a 3 inch hole so it wouldn't be able to attach though.
    view full answer...
  • Can the 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2 Mount Facing Forward
    If you mounted the 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2 with the opening of the vent facing forward like a ram air hood on a car there is a better chance of it allowing water through it. If there is any way to mount it like in the picture I attached that we got from a customer you would be better off. That being said, most hood scoops that are small like the part # HMAV2-AVT2 actually don't get a lot of direct airflow at highway speeds because the wind deflects off the top...
    view full answer...
  • Side Wall Vent Recommendation for an Enclosed Trailer for Maximum Air Flow
    Since heat rises I would at the very least put a set of the Trailer Vents # HMAV2-AVT2 near the top of the trailer to get the hottest air of the trailer out. What you could do for maximum air flow in your trailer is have a set facing forward in the front of your trailer near the bottom of the side wall and then have another set facing rearward at the top/back of the trailer. This will maximize getting cool air into the trailer and hot air out.
    view full answer...
  • Venting a Sprinter Cargo Van to Keep Interior Temperatures from Climbing in Summer
    The Redline 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2 that you referenced is a good option for your application in the summer time, but this vent does not allow you to seal it off in the cold months. A good option for your application is a butterfly-type vent that will allow you to open and close the air flow as required. Redline offers their round butterfly vent # 371800 that is shown in the linked video. This vent will withstand highway speeds but do note that there will be some...
    view full answer...
  • Orientation of 2-Piece Polypropylene Trailer Vent to Prevent Air Flow Disturbances
    If you are worried about moving too much air in your trailer with the install of the trailer vent part # HMAV2-AVT2 your best option would be to only run these vents as exhaust vents so facing the rear of the trailer as that will gently pull air out of the trailer as you are driving. I attached an install video for this vent for you to check out as well.
    view full answer...
  • Replacement Waterproof Wall Vent for Enclosed Trailer
    The semicircular portion of our wall vent, # HMAV2-AVT2, mounts to the outside wall. The ventilation slots are on the bottom of the vent, so as long as a sealant is used to install it the vent won't allow water to the interior of the trailer. We recommend using a sealant like sealant part # 0160297, to help seal the trailer from the elements. The Loctite urethane sealant is applied as a thick liquid to parts before assembly or in seams after assembly to create a waterproof bond in a...
    view full answer...
  • Installing 2-Piece Vent On Cargo Craft Enclosed Trailer
    Using the Great Stuff sealer you mentioned is a great idea to insulate and fill all the voids between the wall and outer aluminum siding on your trailer when you plan on installing the Polypropylene Trailer Vent, part # HMAV2-AVT2. A word of caution when using this sealer is that it expands a great deal, and if it has nowhere to expand will cause issues by pushing the walls apart. A little goes a long way with this stuff. Please make sure you read the label before using this sealer....
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  • Trailer Vent Recommendation for Venting an Air Conditioner Unit
    The 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2 would work well as an air conditioner vent on your trailer. You would just need to cut a 3 inch hole in your trailer to install the vent. For self-tapping screws the part # 31071 would work great and then for sealant part # 0160297.
    view full answer...
  • Recommended Orientation/Installation for Redline 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2
    The Redline 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2 should be installed so that the openings on the flat bottom portion of the external section face down. In any other orientation there will be potential for rain to enter. Installation also requires that you apply a sealer of some kind to the two parts' mounting flanges. You can use a silicone caulk or a urethane sealant like TempPro # 0160297. Please refer to the linked photo for illustration. We also offer installation hardware,...
    view full answer...
  • Vent Modifications to Increase Flow in 5 x 9 Enclosed Trailer
    The two-piece vent assembly you referenced, part # HMAV2-AVT2 from Redline, includes an outer portion with perforations on its lower surface to allow hot air out while preventing rain from getting in. Four of these vents (or similar equivalents) seem like a suitable start for basic trailer ventilation so you are on the right track. However, you may want to consider a roof vent. This will require some obvious cutting in your trailer and careful sealing of the vent (to prevent entry of...
    view full answer...
  • Best Vent Location To Prevent Items From Blowing Around While Providing Trailer Ventilation
    When installing a product such as the 2-Piece Polypropylene Trailer Vent for 3" # HMAV2-AVT2 inside the trailer, the best way to face vents to prevent items blowing around the trailer depends on the vent location. There are slots on one side of the unit, allowing you to position the vent for best airflow. I recommend installing the vents near the top of the trailer to get the hottest air of the trailer out. With the vent being installed closer to the roof of the trailer, point the slots...
    view full answer...
  • Availability of Trailer Vent that Mounts on Wall that Can Open and Close While Traveling
    The best option for that would be the # RV-626-062. This can open and close on either side to allow you more flexibility in terms of how much air you would want to move. Check out the review video I attached for more info as well.
    view full answer...
  • Tips for Trimming 2-Piece Polypropylene Trailer Vent to Fit a Thin Wall
    The easiest way to trim the round vent piece in Polypropylene Trailer Vent # HMAV2-AVT2 is to first determine how much needs to be trimmed but placing it through the hole in the trailer wall. Mark the proper depth on the vent piece then remove it from the wall. For a straight, clean cut I recommend a rotary tool. You could use a hack saw with fine teeth as well but I would be careful to keep it as straight as possible. You will likely have to sand off some rough edges no matter how it is cut.
    view full answer...
  • How Should Polypropylene Trailer Vent # HMAV2-AVT2 Be Installed and Will it Keep Out Water
    The short answer is nothing prevents water from going into vent # HMAV2-AVT2. If you have the opening facing down some water may trickle in at higher speeds but it would not be like a continuous misty spray. I believe that the way you want to install these vents would work well, especially considering that you will also be adding a roof vent. While I have not personally seen anyone install these vents in this manner, there really is no right or wrong way to install them and your way...
    view full answer...
  • What Size Hole Should be Drilled to Install a 2-Piece Polypropylene Trailer Vent
    To install the 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2 and have it functional you will need to drill a 3 inch hole with a hole saw like you suggested. If your trailer wall is thicker than 1-1/2 inches you may need to use a piece of 3 inch inside diameter PVC pipe and drill a larger hole to match the outside diameter of the 3 inch pipe.
    view full answer...
  • Orientation of the 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2 When Installed
    It really is up to you how you want to install the 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2 that you referenced. The safest way will be with the opening facing down so that water doesn't leak in but we have seen people face the opening rearward without problem as well.
    view full answer...
  • Where to Install Redline 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2
    The Redline 2-Piece Polypropylene Trailer Vent # HMAV2-AVT2 can be installed in any convenient location on your enclosed trailer where you have or can make a 3-inch diameter hole. These vents will work best when used in multiples, with some near the ceiling and some near the floor, to allow cooler air to enter through the lower vents and hotter air to exit through the upper vents. I recommend you use a sealant for installation, such as silicone caulk or Silicone Sealant # 0160297. You'll...
    view full answer...
  • What Size Hole is Needed to Install the 2-Piece Polypropylene Trailer Vent
    Installation of the 2-Piece Polypropylene Trailer Vent, # HMAV2-AVT2, requires a 3 inch diameter hole when installed in a trailer with standard trailer wall thickness, 1-1/2 inches thick or less. This is the case for most enclosed trailers, but since your trailer wall is thicker than 1-1/2 inches you will need to use an appropriate length piece of 3 inch inside diameter (ID) PVC pipe to accommodate the thicker wall. The outside diameter (OD) of the 3 inch ID pipe will then dictate the...
    view full answer...




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Info for this part was:

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