GAF Master Flow 16 in. x 8 in. Aluminum Foundation Vent Covers (2-Pack) – Prevent Frozen Pipes, Debris, Easy Mounting, Aluminum Construction, Includes 2 Covers & Springs - FVC168

A perfect, easy and inexpensive solution. These were easy to install and fit perfectly. I'm very pleased with the protection these offer for my crawl space and they look great.

This vent cover did the trick. I closed up air under my house.

I think I purchased these last winter but never used them. I finally just installed them on my five vents and they’re absolutely perfect. I wish I would’ve found them years ago when I moved into my house on top of a crawlspace.This is probably one of the best products I have found so far on Amazon!

Very easy to install with the included spring. Really ain’t much else to choose from as far as what to block ur vents off with. Try to make my own with plastic tarp and tape and that didn’t go very well lol. But seem of good quality

Perfect for the job and fast shipping, buy again.

These covers are 7.5" tall and 15.5" wide. I assumed these things were standard, but my vents are actually 22 inches wide, so these did not fit. I didn't realize this until the next time I needed them several months later, and well after my return window had closed.

A little tricky to install with our crawl space vents that have the mesh openings. A little elbow grease though and they pop on and stay put. A little thin but very effective especially compared to the vent covers that are much more expensive

They were a perfect for the vents in my house. They were the same size as the originals. Be sure to measure the openings before you order. They could be a little hard to install if you have never done it before.