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Price: $7.60

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Butterfly Vent - 7-1/4" Round

Item # 371800

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Our Price: $7.60

Enclosed Trailer Parts

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Shipping Weight: 0.27 lbs

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371800 - Butterfly Vent Redline Vents
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371800 - Butterfly Vent Redline Vents
Redline Enclosed Trailer Parts - 371800
Redline Vents - 371800

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  • Vents
  • Butterfly Vent
  • Redline
  • Silver
Call 800-298-8924 to order Redline enclosed trailer parts part number 371800 or order online at etrailer.com. Free expert support on all Redline products. Guaranteed Lowest Price and Fastest Shipping for Butterfly Vent - 7-1/4" Round. Enclosed Trailer Parts reviews from real customers.


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Redline Enclosed Trailer Parts - 371800


  • Measures 7-1/4" edge to edge
  • Butterfly-style opening

371800 Redline Round Butterfly Vent




Video of Butterfly Vent - 7-1/4" Round


Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Redline Enclosed Trailer Parts 371800 Review

Today were looking at the Redline Round Butterfly Vent part number 371800. This vent measure 7-1/2 inches edge to edge. Has four predrilled mounting positions, and is a butterfly style opening. There you have it for the Redline Round Butterfly Vent part number 371800 .


Customer Reviews

Butterfly Vent - 7-1/4" Round - 371800

Average Customer Rating:  4.8 out of 5 stars   (82 Customer Reviews)


- 371800

by:


Great people to deal with. Product as discribed and, fast shipping if need anything else will be sure to check with them. 210563


Comments

Its Just fine.

David E - 10/13/2016

21504

- 371800

by:


Excellent product, fit my 70's model horse trailer perfect. Super fast fast fast shipping! 131361


Comments

The product is still great, thanks again!

Ashley - 05/21/2015

11920

- 371800

by:


Product as advertized, great price, fast shipment 88202


Comments

Great products. Working well. Thank you

Jim T - 07/11/2014

5540

- 371800

by:


These butterfly vents were replacements on a 1994 horse trailer that we are refurbishing. The old ones were solid rust and couldn't be saved. Though today's vents aren't made as large as the old ones, we can make them work and are good quality for this job without a huge investment. We're waiting to install until after we repaint the outside of the trailer so no photos at this time. Fast shipping was also a plus. Thanks etrailer!! 480237



- 371800

by:


I love Etrailer, they have everyday parts as well as hard to find ones. I've ordered parts a couple of times , delivery is always spot on and George is very helpful. The butterfly vent I ordered fit exactly. Same holes no drilling. 295129



- 371800

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Over the past several months I have been reconditioning an older cattle trailer. I changed all the lights and replaced the electric brakes. All the repair items were purchased from etrailer. All the items were received in a timely fashion and found to be exactly as described on their web site. I now have a functional, road worthy trailer. Using etrailer made this job a lot easier. 304078



- 371800

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These are sturdy and tight vents. I was surprised just how tight they are, the adjustment discs stay in place without any concern about vibrations changing their positions. I bought them for a pilot lab steam treatment unit and installed them on a plexiglas enclosure. Being aluminum they look good and will not corrode. Very cost effective. Delivery was fast and courteous! 160347



- 371800

by:


I had a really tough time finding these butterfly vents for a trailer I am restoring. Etrailer had them in stock and delivered them extremely fast and a really good price. The vents themselves were completely covered in protective film to prevent ant scratching of the surfaces. I am very happy with the product and the service I received from etrailer. 108643



- 371800

by:


I searched for the best price I could find on butterfly vents and it was here at etrailer.com. They processed my order quickly, shipped fast, and the product itself was high quality. I really like that there is enough friction when opening or closing the vent that I don't think they will open or close on their own when I'm driving down the road. 230185



- 371800

by:


Product as expected, but the costomer service was SECOND TO NONE. Got an e-mail when the order was received, when the order was filled, when it was shipped, and when it was delivered. Order was made late, late one night - shipped the next day - received at the house the next. Takes a lot to impress me, but etrailer.com impressed me. 8404



- 371800

by:


Great product ands customer service from start to finish! They work great on a smoker. 306248



- 371800

by:


Ordered these for an old horse trailer my husband and I are restoring. Quality of product is great. Ordered this product on a Monday and it was at my door by Thursday!!! Great Company, Great Products, Great Prices, and EXCELLENT Shipping!! Would def order from them again. 411770



- 371800

by:


It was exactly what my husband was looking for. We have an enclosed trailer but dust comes in the vents when going down our gravel road. We placed these over the top of the vents on the inside of the trailer. We shut them to keep the dust out! 193310



- 371800

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I put these vents on my dog box. 41294



- 371800

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As of 3/11 the UPS has lost my package. They left a pkg at my house but it was not from etrailer, but they marked yours as delivered. Now they can't seem to find my butterfly vents! etrailer did a great job on their end as usual. 177951



- 371800

by:


I ordered 3 butterfly vents and received them very quickly in excellent condition. Shipping was very inexpensive, I was impressed. I do wish though that a gasket could be bought for that vent like the higher priced vents. 564395



- 371800

by:


Kind of useless. Even with the butterfly flap closed there is so much space for water to get in no matter how you mount it. Would not recommend. Spend a little more and get a better one. 23425



- 371800

by:


Product arrived in great condition. Our large order was split to improve delivery time, these will help with air balancing our ss kitchen ducting. customer service did a great job. 325374



- 371800

by:


Hello Patrick. Received the vents today & started installing them on the trailer. So far they are exactly what I needed ! Pictures & a better review forthcoming. Thanks 102939



- 371800

by:


Received these vents in a timely manner. They look great! Have not applied them to the trailer yet as it is being painted but i expect them to work perfectly! 342022



- 371800

by:


Nothing but RAVE reviews for eTrailer.com Parts were exactly as ordered, great price, fit perfectly. Couldn't be more elated with the fast service too! 305768



- 371800

by:


Great product with excellent service!!!!! You won't be left in the dark with etrailer, they go above and beyond to inform you of shipping progress! 140815



- 371800

by:


Product seems to be exactly what I expected. Very light weight, and appears easy to install. Haven't had the chance to put them on yet. 207879



- 371800

by:


The vents were exactly as pictured and what I needed. The shipping was extremely fast, shipped on Saturday and delivered by Wednesday. 104955



- 371800

by:


Great reasonably priced product. I bought two of these to use on a homemade dog box. Shipping was quick and the product was awesome. 382473



- 371800

by:


The round vents I bought have worked very well. I used them for air vents on my beagle box. I wouldn't hesitate to order them again! 353114


Comments

Still works and looks as good as the day I bought them

Ashley S - 03/15/2018

35904

- 371800

by:


Product made good and looks great.. Great customer service Heather is very knowledge of the products they offer.. Thanks etrailer 398398


Comments

Still using the product and still Great performance one year later. Thanks Guys.. ????

Eric R - 06/24/2018

40143

- 371800

by:


Loved the value in this product. Works as advertised and was delivered super fast along with the other items I ordered from you. 104710



- 371800

by:


Great products-excellent quality. Very competitive pricing. Expedient free shipping on order. I'm sure to be a repeat customer. 443179



- 371800

by:


The product will be used for a vent in a dust collection enclosure on the underside of a router table. Will get pictures later. 296257



- 371800

by:


We were real impressed with the fast delivery and with the product and if we ever need to order anything it will be with you. 78482



- 371800

by:


This is a great heavy duty product at a great price. I used it on a diesel engine air cleaner box as an adjustable inlet. 474163



- 371800

by:


Just as described and received it in a few days. We can't wait to put them on our livestock trailer we're fixing up. 426903



- 371800

by:


A 1 Item was better than I thought it would be. Service was the best. I would recommend this site to anyone. 5 Star 5361



- 371800

by:


This worked perfect for our dog boxes to let some air circulate if we need to on them not so cool hunting days!!! 296127



- 371800

by:


Real nice product and best price on the internet. Fast shipping, good company to do business with. Thanks George 508103



- 371800

by:


Needed ventilation for the smoker I built. Worked out perfect. I chose aluminum over stainless for the price. 63721



- 371800

by:


Nice product for simple ventilation needs. Would have been nice to have a matching gasket with the vent. 15965



- 371800

by:


I am very satisfied with product. Shipped to me in a timely manner. I will b a repeat customer. Thanks 198100



- 371800

by:


Easy ordering and fast shipping. Overall great customer service and the product was just as described. 192814



- 371800

by:


Good product. Being used for a crawl space vent down the shore. Fair price and quick delivery. 489219



- 371800

by:


Ordering off the website was so easy. Delivery was fast and the response time was excellent. 20402



- 371800

by:


surprised at the quality, better than I was looking for. Service was super fast, Thanks 114746



- 371800

by:


Good quality product at a reasonable price and fast shipping! What more could you want? 273315



- 371800

by:


good sturdy vent, well made, best price I found, service was good, received right away 313557



- 371800

by:


This item was exactly what I wanted. The shipping was fast. I am very satisfied. 184434



- 371800

by:


Good price, fast shipping and vents are as described. Excellent sellers. Thanks. 124364



- 371800

by:


Great service, good value. good people. I am a repeat customer. Thanks again 174684



- 371800

by:


I used them on my truck dog box for ventilation. Worked great, thanks. 512116



- 371800

by:


EVERY THING WENT VERY WELL GREAT COMPANY THANKS. I WILL USE YOU AGAIN 459860


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Ask the Experts about this Redline Enclosed Trailer Parts
Do you have a question about this Enclosed Trailer Part?


  • 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...

  • How to Install the 7-1/2 Inch Round Butterfly Vent # 371800 on an Enclosed Trailer
  • To install the 7-1/2 Inch Round Butterfly Vent, # 371800, you will need to drill or cut a hole in your trailer that is 5-7/8 inches diameter to no more than 6 inches diameter. If you have access to a hole saw this size for a drill the wold be the cleanest way to cut the hole. A smaller hole could be used, but the butterfly may rub on the trailer sides if a smaller hole is used. The mounting holes on this vent are 4-9/16 inches on center and the distance between the inside of any two...
    view full answer...

  • Is the Butterfly Vent Waterproof and Will it Stay Closed or Open
  • This Butterfly Vent # 371800 that you referenced is not waterproof. If the vent was on the side of the trailer it would not get direct water sprayed at it when it is raining so it should not let too much moisture through. If you left the vent in either the open or closed position it would move. The amount of friction in the vent assembly would prevent it from moving just from the vibrations of the trailer rolling down the road. With that being said, it is not difficult by any means to...
    view full answer...

  • What Material is Butterfly Vent for Trailers 371800 Made Out Of
  • This butterfly vent is typically used on horse, stock, dog and various other types of trailers. It is a full 7 1/2 inch in diameter with four mounting holes around the edge. The polished aluminum is attractive as well as being a useful source of ventilation.
    view full answer...

  • Side Vent for Enclosed Trailer with Interior Wood Paneling
  • You can still use butterfly vent # 371800. The wood paneling in the trailer should not be an issue because no matter what material is on the inside you would have to cut a hole for the vent. If there is a gap between the outer and inner walls of the trailer then you could bridge that gap with some small gauge sheet metal such as tubing used for clothes driers. A vent such as # WHMAV2-WAVT2 might be a better option. I have linked a video review of this vent and the butterfly vent as well. I...
    view full answer...

  • Recommended Vents for 10 x 20 Foot Shed
  • The only vents we have that will work for the shed walls are manual open and close. The 2-Piece Side for Enclosed Trailers - Metal - 10" x 12" # 9139 is the nicest option and will close from the inside for the winter heating. You can use the butterfly vent # 371800 on the exterior if you so desire but it gives you not interior help. The Side Cowl Ventilator with Screen # PLR1715 is the option I recommend because of your desire to open from the outside. This has a gasket for a nice...
    view full answer...

  • Installation of Redline Butterfly Vent # 371800
  • On the Redline Butterfly Vent, part # 371800, the location of the nob does not really matter, usually on either side. We recommend to install the butterfly vent on the trailer so that the triangular openings of the vent are parallel to the ground, with one triangular opening to the front of the trailer and the other triangular opening to the rear of the trailer. I am including a link to a video review of the vent and in the video he will be holding the vent the way we recommend to install...
    view full answer...

  • Differences Between Butterfly Vents Part # 371800 and Part # PLR24-002
  • The only differences between the vents is that part # PLR24-004 comes with a rubber gasket and part # 371800 does not. The mounting holes are also positioned a little differently. They are both 7-1/4" in diameter and made of a polished aluminum. If you are concerned with rust then I highly recommend using the Butterfly Vent part # PLR24-002 which is made of stainless steel.
    view full answer...

  • Availability of Butterfly Type Trailer Vents
  • We do indeed offer trailer butterfly vents, as well as other types, and you can see items # 371800, # PLR24-002 and # PLR24-004 on the linked page. I also linked our main page for all trailer vents and vent parts. We carry replacement parts for many of the vent products we offer.
    view full answer...


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