M-D Building Products 43336 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, White)

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.

This gasket is the best you can buy out there (IMHO). I find it is best used if the gap is ½” to ¾”. Less will possibly work, but you may quickly shave off the dangling legs. These can be somewhat hard to install on a 1 ¾” door as the fit is super tight (compression fit). That is why there are no holes for screws. Here is the installation that worked for me (second one installed and lessons learned).1) The Mark: (if required. Yes, I know it is 36” and so is your door, but trust me). Lay at base of door, flush at one end and mark opposite end at end of door. Trim as below - if length is perfect, skip to 3).2) The Trim: (lesson learned from installing as is - ¼” extended past the door edge hitting the side frame. Not fun to remove). Use anything you are skilled with: Hack saw, band saw, chain saw or whatever. Here is what I used/did. I used the heavy duty scissors to snip both upstanding legs (as far as I could). I then snipped each dangling leg at the same distance as the upstanding legs. I then used a sharp blade against a small section of 2x4 to cut the bottom – was tough and takes patience / great force. (see cut piece in pics – yes, my door is 36” and I still trimmed off about a ¼”.3) The Install: Spray Windex on both sides of the lower sides of the door along with a shot that length of the seal (insides). Yes, Windex – as any avid dirt biker knows – lubricates for install and evaporates for a extremely tight seal (like grips on your dirt bike!) Should have bought this stock in the 70’s.4) The Slide: Before the Windex evaporates, slide the seal from outer end of door (as if you could install any other way). It will be easy for the first 6”, then you will need a gloved (leather preferably) hand to pound it on most of the way. I got it to about to 3-4” left before my palm gave out. From there I used a block of wood (to protect the seal) and a small hammer (yea, the one shown is a tiny tike hammer, but the one I use the most) to tap the seal flush to the door. Now you are almost done.5) The Pop: More than likely, the seal is up to the bottom of the door. I couldn’t even move my door as it was sealed to the floor. I used a rigid scraper (metal as shown – I have rigid and flexible and had to use the rigid one) sliding under the seal (gently not to damage the dangling fingers) in 6” increments and pulling up (you will hear the pop as it seats with the bottom of your door. I did this to both inside and outside of door.Key: From the Windex spray to the end was done before the Windex dried.Hopefully this helped with the installation.

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.

Being a homeowner with a draft-prone 1950s house, I found myself in need of a simple solution to address the significant gaps underneath certain doors. These gaps were not only allowing bugs, debris, and cold air to enter, but also causing discomfort. Having dealt with the frustration of using temporary seals that would not stay in place, I eventually stumbled upon the ultimate solution: the M-D Building Products 36-Inch White Vinyl U-Shape Door Seal.Installing this slide-on gap cover is a piece of cake, as it requires minimal effort and is extremely straightforward. The process is quite simple - just measure the dimensions, cut the material to fit if necessary, and then easily slip it over the bottom of your door. No nails, screws, or sticky tape are required. With its heavy-duty vinyl material and uniquely designed rigid U-shape, this product fits snugly while still providing smooth functionality for your door.I'm absolutely thrilled and filled with excitement to finally have an energy efficient barrier in place, which not only keeps out dust and leaves but also effectively blocks cold drafts from entering. Bid farewell to pesky creatures like spiders and roaches by utilizing our method, which ensures that they will no longer have access to your personal space. Besides its role in weatherstripping, the thick pile on the door sweep also serves the purpose of soundproofing.If you are looking for an affordable and hassle-free solution to prevent unwanted elements from entering beneath your exterior doors, I strongly suggest giving the user-friendly M-D Vinyl Door Seal a try. Compared to flimsy plastic strips or temporary cloth solutions, this product offers superior protection. Although my doors may be outdated, I have sealed off the gaps underneath them thanks to this practical fix.

I put these on all our bedroom doors to give us all a little privacy and reduce noise spillage. They are easy to measure and cut and they slip on the bottom of the doors with ease also. No need to glue or fasten them to the doors either. Of course if you want to screw them in or nail them to the door for further stability I don’t think that would be a problem but it’s really not necessary to do that. These also reduce draft AND keep our cat from doing that thing where she reaches under the door and keeps banging it all night, keeping us up. If you have a cat you know what I’m talking about because cats are what goes bump in the night. Ugh.

Had to trim some but fit well and with a spray of windex it went on well easily.

This worked fine for a few weeks, but it fell apart quickly. Best to make sure you have a good fit, not too tight, otherwise the constant brushing across the door saddle will have the soft plastic underneath torn up fast.

Goid fit. Performs,as advertised. Great option and great price.