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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 .
Average Customer Rating: 4.8 out of 5 stars (91 Customer Reviews)
Good products vents will work good on my dog box 560515
I purchased 2 for a horse trailer. I cut out only the butterfly to make it stronger and after 1 year, around 1000 miles, everything is still perfect. I do recommend them. 640594
Great product ands customer service from start to finish! They work great on a smoker. 306248
Received in good condition. Item is as described. Well pleased. Arrived earlier than expected. 698862
Fast shipping great product thanx 683052
I really liked the fast shipping, the butterfly vent worked great,highly recomend etrailer 662929
Was sent out fast got it quick thank you 654164
good part, good service, fair price. thank you 651455
Easy to instal 607130
Sturdy and well made product. Just what I was looking for at a great price! 604062
Just what I needed and ordered. Perfect for my BBq pit needs. Once the pit is built, If possilne I will load pictures. 579311
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
Excellent service 514018
I used them on my truck dog box for ventilation. Worked great, thanks. 512116
Real nice product and best price on the internet. Fast shipping, good company to do business with. Thanks George 508103
Good product. Being used for a crawl space vent down the shore. Fair price and quick delivery. 489219
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
Patti - 03/01/2019This 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
Just what I expected . Fast shipping 461045
EVERY THING WENT VERY WELL GREAT COMPANY THANKS. I WILL USE YOU AGAIN 459860
Great products-excellent quality. Very competitive pricing. Expedient free shipping on order. I'm sure to be a repeat customer. 443179
Did exactly like it should have! 441399
Don p - 10/10/2018great phone rep.,Oder was perfect ,great company to do business with. 440999
Fairly easy to install. Cutting the hole is the hardest part. 430374
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
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