M-D Building Products43337 Vinyl Cinch® U-Shape Slide-On Under Door Seal, Easy-to-Install, Energy-Saving, Weatherproof Seal for Doors, Effective Draft Blocker, Ideal for Home (36 Inch, Brown)

This under-door seal was super easy to install and fit securely under my door. It looks great and keeps out drafts, noise, and even those annoying little bugs that used to sneak in under the door. The difference in temperature in the room is already noticeable, especially on warmer days. Plus, for the price, it’s an amazing value! Highly recommend it if you’re looking to seal up any gaps and improve comfort at home.

So far so good. Slid on and seems like a tight fit. Was getting tired of bugs crawling in and am hoping this will do the trick

Why did you pick this product vs others?:The door seal arrived and it was installed within 2 hours from delivery. I was a little concerned about how it would install due to other reviews, but it went in nicely. The vinyl material had just a little give so installation was difficult but not too hard. The first two thirds of slipping it on went easily, but the grip got progressively stronger and the last little bit required a bit of hammer tapping to get it all the way. I cut the seal to length easily with my band saw, but I expect a hacksaw with the required frame depth would do just as well.

Very easy to install on my front door which had a 1/2" gap. Has been doing a great job at keeping the AC inside the apartment! I didn't need to trim to fit, but looks like it would be simple enough just to slice off a part of it if needed.

Perfect fit. Looks great and sealed under the 50 year old door. Glad I read the reviews where someone commented using a hammer and wood block to assist in installing because that really did the trick.

Great product! Fit my French door frame perfectly.Use product almost a month, it stop the rain coming the French door and reduce noise too.

I bought and installed two. Then discovered I could use one with Kerf rail attachment so ordered those as back up. For these U channel type one came in fine shape. Other was deformed with the four seal ribbons bent almost to 80°. But I was OK with that because one door had a very small gap to seal, so fit the deformity. They install hard even using trick of soapy water. If you can install from bottom up do so and not hammer much sideways. There is a rubbery seal on the outside along very top of U channel that is delicate and easily damaged. But I see it is useful to keep water out which would corrode metal doors. Trapped water is such a concern that I would not install these on doors not completely out of the rainfall. One is working fine after a month. The one on the tight threshold tore a seal fin off within a few weeks. But still three were working. I needed to temporarily seal an inside door with wide gap. So I stole this failing one to do that. Worked great as looser fit and adjustable height. The U channel had damaged the metal door paint badly. Now I believe the previous owner repainted the door and probably with not the best paint. But it is something to consider and all the more reason to install very very carefully. Product has its place but would not use on a tight fit again.

Didn't fit my door, despite measuring, but I see what the issue was. Our door is just too low for the bottom part. When I tried to send them back, apparently, it was cheaper for me to keep it, so they gave me my money back. I don't know what I'm going to do with it, but I was pleased about the service - as usual. It's a shame because it seems the product is of high quality and really would have done a great job in protecting from drafts. I had to completely rethink what I needed for this door. It slid on firmly when I tried to install, but it was just too long.