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)
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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)

4.2/5
Product ID: 94501780
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Details

  • Brand
    M-D Building
  • Material
    Vinyl
  • Color
    White
  • Product Dimensions
    36"L x 2"W
  • Item Thickness
    1.75 Inches
💡Energy Saver
🔧Easy Install
🌬️Draft Blocker

Description

🔒 Seal in Comfort, Block Out Chaos!

  • DIY FRIENDLY - No tools needed—just slide it on and enjoy!
  • NOISE NO MORE - Create a serene environment by blocking unwanted noise.
  • SEAL THE DEAL - Transform your home into an energy-efficient haven!
  • DURABLE DESIGN - Crafted from high-quality vinyl for long-lasting performance.
  • ECO CONSCIOUS COMFORT - Lower your bills and carbon footprint effortlessly.

The M-D Building Products 43336 Vinyl Cinch U-Shape Slide-On Under Door Seal is a 36-inch, easy-to-install weatherproof solution designed to block drafts, reduce noise, and enhance energy efficiency. Made from durable vinyl, it fits snugly under standard doors, ensuring long-term performance and comfort in your home.

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Specifications

BrandM-D Building Products
MaterialVinyl
ColorWhite
Product Dimensions36"L x 2"W
Item Thickness1.75 Inches
Recommended Uses For ProductUnder Door
UPC043374433364
Number of Items1
Global Trade Identification Number00043374433364
ManufacturerM-D Building Products
Unit Count1.0 Count
Part Number43336
Item Weight11.2 ounces
Country of OriginChina
Item model numberMD Building - 43336
Is Discontinued By ManufacturerNo
Size36 Inch
StyleDoor Seal
Item Package Quantity1
Number Of Pieces1
Measurement SystemInch
Included ComponentsMD Building - 43336
Batteries Included?No
Batteries Required?No

Have a Question? See What Others Asked

Can anyone show me a product on Amazon I can order to cut this with please?
Is the logistics updated in time?
do you have brown color?
Will this scratch interior wood floors?

Reviews

4.2

All from verified purchases

J**N

Best seal you can buy (price is great also). Installation can be tough.

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.

J**T

Worth it

This is so much better than the stick on draft blockers I tried for years. They ALWAYS fall off and are just a waste of time and money. I had a considerable gap under my back door, maybe close to an inch and the cold air whooshed in all winter.I got this draft blocker and it is extremely snug on the bottom of the door. I suggest thoroughly cleaning the door and then priming this with a little silicone or olive oil, whatever you have. I had some sticky stuff left over on one spot and it was a bear to get past. I used a hammer on the end and some dish soap and finally got it on.The door was initially harder to close, part of it was it wasn't quite on all the way. I adjusted it a little more and it was much easier, but it isn't like it was before. I have to give the door a bit more of a push now, which is fine considering the dust, bugs and I suspect mice that creep in in the winter the moment it starts to get cool.Worth every penny and I wish I had gotten it years ago. If it breaks down over time (as literally everything does... I will happily replace with this item.

V**E

A bit of a fight to put it on and cut it, we'll see how well it works when it rains.

My exterior door is right on the edge of the door sizes for this, so I knew it was going to be a snug fit (as it should be, to keep water from working around the lip). However this was a battle! I finally wound up having to put a thin film of machine oil along the sides to help it "slide on". And even then it was a bit of a battle. I didn't want to use a hammer for fear of cracking off the 'flaps'. Thankfully once it was on, everything else worked out okay.Cutting it was not easy, in the instructions they show a guy using a hacksaw / woodsaw. I now understand why. You're not doing this with a utility knife or razor! Make sure you have something with a tooth-blade or something powered to get through it.

V**.

Fixed a sun warped door

I had an old Pella fiberglass door and the bottom had warped and disconnected from the bottom. Everyone said the door had to be replaced so I figured I’d give this a try and it worked. Some people suggested gluing and clamping it, but it was coming apart at the top not as bad and we did try to glue that and it didn’t work. This worked perfectly and it’s gonna give me more years out of the door instead of replacing it very very happy. I know there’s plenty of people out there with warped Pella doors so it worked on mine.

G**O

Good product

Good product easy to install

J**.

They work!!

Easy to install and work as designed.No more water on the floor after it rains.Thank you,

R**L

These don’t bend to fit all doors

M-D Building Products 43338 36 in. Clear Vinyl U-Shape Cinch Slide-On Under Door SealI got these for our front door and side door. One door was wood and one door was metal. I read all reviews before purchasing because our home was built in 1950s and when we purchased for complete remodel we needed something for draft protection.The insulation protection was the main reason we bought it. However we bought TWO and the hard plastic was absolutely NOT malleable and made these impossible to slide on the door to install. I bought two based on reviews and I really wanted them to work but they didn’t.Sad thing is one i got for 1/3 of the price on the “T moo like a cow” website worked.We have now used these on MULTIPLE doors with zero success.Just know if you need these to bend at all on install- they don’t.Quality made but didn’t work.

I**N

Damaged

Mine came in damaged so I returned it

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Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

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Anita G.

Good experience, but the tracking updates could be better.

2 months ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

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