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M-D Building Products

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)

    • Based on 5,281 reviews
Condition: New
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$14.79 Why this price?
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Availability: Only 5 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Apr 28
Order within 6 hours and 49 minutes
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Color: White


Features

  • Superior Weatherproofing: Enhance your home's insulation with the Vinyl Cinch U-Shape Slide-On Under Door Seal. This innovative design effectively blocks drafts and dust, maintaining a comfortable indoor temperature year-round. Made from high-quality vinyl, it ensures a tight seal under your door, reducing energy consumption and lowering heating and cooling costs.
  • Durable & Long-Lasting: Crafted from robust vinyl material, the under door seal is designed to withstand daily wear and tear. Its durable construction ensures long-term performance, making it a reliable solution for door sealing needs. Regardless of varying weather conditions, this under door seal remains intact and effective, providing consistent protection and maintaining its integrity over time.
  • Easy Installation: The slide-on U-shape design allows for quick and simple attachment to the bottom of your door, without the need for special tools or professional assistance. This user-friendly feature makes it an excellent choice for DIY enthusiasts and homeowners looking to improve their home's efficiency. The seal fits snugly onto standard doors, ensuring a secure and seamless fit that enhances its performance.
  • Noise Reduction: The under door seal not only protects against drafts but also acts as an effective noise blocker. This feature is particularly beneficial for homes and offices located in busy areas, where reducing noise levels can significantly enhance comfort and productivity. By creating a sound barrier at the bottom of your door, this seal helps to minimize the intrusion of unwanted noise, ensuring a quieter and more serene indoor environment.
  • Energy Efficiency: Improve your home's energy efficiency with the M-D Building Products Cinch Under Door Seal. By effectively sealing gaps under doors, it prevents the loss of heated or cooled air, allowing your HVAC system to operate more efficiently. This results in lower energy bills and a reduced carbon footprint, contributing to a more sustainable and cost-effective living environment.

Brand: M-D Building Products


Material: Vinyl


Color: White


Product Dimensions: 36"L x 2"W


Item Thickness: 1.75 Inches


Brand: ‎M-D Building Products


Material: ‎Vinyl


Color: ‎White


Product Dimensions: ‎36"L x 2"W


Item Thickness: ‎1.75 Inches


Recommended Uses For Product: ‎Under Door


UPC: ‎043374433364


Number of Items: ‎1


Global Trade Identification Number: ‎64


Manufacturer: ‎M-D Building Products


Unit Count: ‎1.0 Count


Part Number: ‎43336


Item Weight: ‎11.2 ounces


Country of Origin: ‎China


Item model number: ‎MD Building - 43336


Is Discontinued By Manufacturer: ‎No


Size: ‎36 Inch


Style: ‎Door Seal


Item Package Quantity: ‎1


Number Of Pieces: ‎1


Measurement System: ‎Inch


Included Components: ‎MD Building - 43336


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: November 2, 2014


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Apr 28

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Best seal you can buy (price is great also). Installation can be tough.
Color: White
Review Image by John John
Review Image by John John
Review Image by John John
Review Image by John John
Review Image by John John
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. ... show more
Reviewed in the United States on December 22, 2024 by John John
    • Works great.
Color: White
Fits perfect under the door and keeps the cold air out. Easy to install and easy to trim if you have to.
Reviewed in the United States on January 23, 2025 by JH
    • A Simple Solution to Stop Bugs, Drafts, and Dust from Invading Under Your Door
Color: White
Review Image by NorkDorf Entertainment NorkDorf Entertainment
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. ... show more
Reviewed in the United States on November 21, 2023 by NorkDorf Entertainment NorkDorf Entertainment
    • Works good.
Color: White
Very tight fit, slide on then use a mallet or hammer to tap it on the rest of the way. Works great now that it's on! We needed this!
Reviewed in the United States on November 27, 2024 by Shawn R.
    • Heck Yeah! Good Stuff (:
Color: Brown
Takes the breeze out from under your doorway and EZ to install. No brainer and at the right price.
Reviewed in the United States on February 14, 2025 by SteveS
    • Quick and easy!
Color: Clear
Review Image by Tyler Tyler
I found this product incredibly helpful! I tried a few different options without any luck and then I stumble upon this little gem! Pros: super easy to install. Measure, cut, slide. The sliding part did take some finesse. I used my foot to get it fully on there, a rubber mallet would also suffice. No cons that I can think of. We had a gap that was no longer sealed at all, I didn't notice it and one day laid down to do a push up and happened to look over and saw daylight! The amount of air we were losing and bugs coming in, pure insanity. This little thing put a stop to all of it for a cheap price! ... show more
Reviewed in the United States on January 28, 2025 by Tyler Tyler

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