M-D Building Products 40717 36 in. White Vinyl DENY™ U-Shape Slide-On Under Door Seal
M-D Building Products 40717 36 in. White Vinyl DENY™ U-Shape Slide-On Under Door Seal
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M-D Building Products

M-D Building Products 40717 36 in. White Vinyl DENY™ U-Shape Slide-On Under Door Seal

4.4 stars out of 11 reviews
(4.4)|
11 ratings
M-D Building Products 40717 36 in. White Vinyl DENY™ U-Shape Slide-On Under Door SealM D Building Products 40717 36 in White Vinyl DENY U Shape Slide On Under Door Seal36 in Black Vinyl DENY U Shape Slide On Under Door SealM D Building Products 40718 36 in Brown Vinyl DENY U Shape Slide On Under Door Seal
Actual Color:White
Black, $26.18
Brown, $20.47
selected, White, $18.45

Key item features

  • Durable Construction: Made from a combination of rigid and flexible vinyl, this under door seal is designed for durability and effective sealing.
  • Protective Barrier: It creates a seal between the door bottom and threshold, guarding against drafts, moisture, dust, and insects.
  • Energy Savings: By sealing the bottom of the door, it helps to reduce the loss of heat or air conditioning, contributing to energy efficiency.
  • Integrated Defense: The vinyl fins are permanently embedded with a natural abrasive, providing a physical barrier against bugs.
  • Simple Installation: This U-shape slide-on seal features a compression fit for secure placement and can be cut to the desired length with a hacksaw.
  • Product Dimensions: The seal measures 36 inches in length, 2 inches in width, and 1-3/4 inches in height, and comes in a white color.
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Current price is $18.45
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M-D Building Products 40717 36 in. White Vinyl DENY™ U-Shape Slide-On Under Door Seal
M-D Building Products 40717 36 in. White Vinyl DENY™ U-Shape Slide-On Under Door Seal
current price $18.45
M-D Building Products 40717 36 in. White Vinyl DENY™ U-Shape Slide-On Under Door Seal
4.4 out of 5 Stars. 11 reviews
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Comparison Chart:
MaterialVinylM-D Building Products 40717 36 in. White Vinyl DENY™ U-Shape Slide-On Under Door SealTPEWindow Weather Stripping Door Seal, 5/16" Wide Bulb Bubble TPE Weatherstrip Seal for 3/16" Slot (10 m/33 ft, Black)Silicone RubberWindow Weather Stripping Door Seal, 2 Pack 1/2" Wide Kerf Mount Weatherstrip Seal for (5 m/16.4 ft, White)SiliconeFrost King® SS20BR Silicone Tear Drop Profile Self-Stick Weatherseal, Brown Stripping, 1/2" wide x 1/4" thick by 20-feet longEPDMWorgeous Black Garage Door Seal Weatherproofing Strip for Window 1 Roll EPDM MaterialSilicone RubberWindow Weather Stripping Door Seal, 2 Pack 3/8" Wide Kerf Mount Weatherstrip Seal for (5 m/16.4 ft, Brown)
FeaturesEasy InstallationM-D Building Products 40717 36 in. White Vinyl DENY™ U-Shape Slide-On Under Door SealSoundproofWindow Weather Stripping Door Seal, 5/16" Wide Bulb Bubble TPE Weatherstrip Seal for 3/16" Slot (10 m/33 ft, Black)SoundproofWindow Weather Stripping Door Seal, 2 Pack 1/2" Wide Kerf Mount Weatherstrip Seal for (5 m/16.4 ft, White)Easy InstallationFrost King® SS20BR Silicone Tear Drop Profile Self-Stick Weatherseal, Brown Stripping, 1/2" wide x 1/4" thick by 20-feet long-Worgeous Black Garage Door Seal Weatherproofing Strip for Window 1 Roll EPDM MaterialSoundproofWindow Weather Stripping Door Seal, 2 Pack 3/8" Wide Kerf Mount Weatherstrip Seal for (5 m/16.4 ft, Brown)
Size36" x 2.5"M-D Building Products 40717 36 in. White Vinyl DENY™ U-Shape Slide-On Under Door Seal10 m/33 ftWindow Weather Stripping Door Seal, 5/16" Wide Bulb Bubble TPE Weatherstrip Seal for 3/16" Slot (10 m/33 ft, Black)-Window Weather Stripping Door Seal, 2 Pack 1/2" Wide Kerf Mount Weatherstrip Seal for (5 m/16.4 ft, White)-Frost King® SS20BR Silicone Tear Drop Profile Self-Stick Weatherseal, Brown Stripping, 1/2" wide x 1/4" thick by 20-feet long39.4" x 3.7" x 0.2"Worgeous Black Garage Door Seal Weatherproofing Strip for Window 1 Roll EPDM Material-Window Weather Stripping Door Seal, 2 Pack 3/8" Wide Kerf Mount Weatherstrip Seal for (5 m/16.4 ft, Brown)
Rec. useDoorM-D Building Products 40717 36 in. White Vinyl DENY™ U-Shape Slide-On Under Door SealDoorWindow Weather Stripping Door Seal, 5/16" Wide Bulb Bubble TPE Weatherstrip Seal for 3/16" Slot (10 m/33 ft, Black)DoorWindow Weather Stripping Door Seal, 2 Pack 1/2" Wide Kerf Mount Weatherstrip Seal for (5 m/16.4 ft, White)DoorFrost King® SS20BR Silicone Tear Drop Profile Self-Stick Weatherseal, Brown Stripping, 1/2" wide x 1/4" thick by 20-feet long-Worgeous Black Garage Door Seal Weatherproofing Strip for Window 1 Roll EPDM MaterialDoorWindow Weather Stripping Door Seal, 2 Pack 3/8" Wide Kerf Mount Weatherstrip Seal for (5 m/16.4 ft, Brown)
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Customer ratings & reviews

4.4 out of 5 stars
stars11 ratings7 reviews
How item rating is calculated
  1. 5 stars73% (8)
  2. 4 stars9% (1)
  3. 3 stars9% (1)
  4. 2 stars0% (0)
  5. 1 star9% (1)

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Showing 1-3 of 7 reviews

Dec 21, 2025
Andrew
Item details
Color: White
5 out of 5 stars review

Verified Purchase

keeps the heat in and is durable

I installed this same product several years ago and it has worn out from all the use of the door because it is my front door. so I'm getting a new one because the old one is pretty worn out. I feel like it is quite durable though and that's why I got another one of the same kind. It also does a great job keeping the heat in my home during the winter which is the main reason I got it. The plastic is pretty thick so they are a bit challenging to cut to size - I will probably use my angle grinder which is what I believe I used last time, or a multi-tool saw would work fine too.

Incentivized Review
Helpful?2CBJY7WPGV77639116641
Dec 12, 2025
Julie
Item details
Color: White
5 out of 5 stars review

Verified Purchase

No More cold air coming under my door

Perfect solution to my cold air leaky door.

Incentivized Review
Helpful?2CBJY7WPGV77639116641
Jun 13, 2025
Samantha
Item details
Color: White
5 out of 5 stars review

Verified Purchase

measure and cut before installing. use a mallet to tap on gently because its a tight fit. works great though

Incentivized Review
Helpful?2CBJY7WPGV77639116641