M-D Building Products 43337 36 in. Brown Vinyl CINCH® U-Shape Slide-On Under Door Seal
M-D Building Products 43337 36 in. Brown Vinyl CINCH® U-Shape Slide-On Under Door Seal
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M-D Building Products

M-D Building Products 43337 36 in. Brown Vinyl CINCH® U-Shape Slide-On Under Door Seal

4.2 stars out of 174 reviews
(4.2)|
174 ratings
M-D Building Products 43337 36 in. Brown Vinyl CINCH® U-Shape Slide-On Under Door SealM D Building Products 43337 36 in Brown Vinyl CINCH U Shape Slide On Under Door SealM D Building Products 43336 36 in White Vinyl CINCH U Shape Slide On Under Door Seal
Actual Color:Brown
selected, Brown, $13.38, was $16.98
$16.98
White, $24.13

Key item features

  • Durable Vinyl: Made of rigid and flexible vinyl for long-lasting use.
  • Effective Seal: Provides a seal between the bottom of the door and threshold to protect against drafts, moisture, dust, and insects.
  • Energy Efficient: Helps save on energy by reducing heat or air conditioning loss.
  • Easy Installation: No drilling or screws required; simply slides onto the door with a compression fit.
  • Customizable Length: Can be cut to the desired length using a hacksaw to fit your door perfectly.
  • Standard Fit: Designed to fit standard 1-3/4 in. thick exterior doors.
  • Dimensions: Measures 36 in. L x 2 in. W x 1-3/4 in. H, suitable for most doors.
  • Brown Color: Comes in a brown color to match various door finishes.
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Current price is Now $13.38
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was $16.98
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Columbus, 43215
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About this item

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Customer ratings & reviews

4.2 out of 5 stars
stars174 ratings74 reviews
How item rating is calculated
  1. 5 stars67% (116)
  2. 4 stars13% (23)
  3. 3 stars6% (10)
  4. 2 stars2% (3)
  5. 1 star13% (22)

Reviews summary

Pros
  • : Can be cut to fit door width with basic tools.
  • : Forms a snug fit around the door.
  • : Made with flexible flaps and features that can be adjusted.
  • : Prevents cold air from entering through the door.
  • : Offers lower price point compared to others.
  • : Provides a secure seal around the area.
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Showing 1-3 of 74 reviews

Dec 14, 2025
eric
Item details
Color: Brown
5 out of 5 stars review

Verified Purchase

Excellent product for a windy hallway

This definitely a two-person project. My Wife Christina tremendously helpful since we had to hold the door open and whack the length of 34 inches with a hammer against a 2/4 to get it in place. Then saw off the excess. But does the job!!!

Helpful?6CYMUX08OL2C114979403
Feb 3, 2026
Mike
Item details
Color: White
Sold and shipped bySupply the Home
5 out of 5 stars review

Verified Purchase

Strong and effective weatherstrip

Cut to length to fit your door. You may need to trim off a small tab at each end so the plastic doesn't hit the door jambs if they are a tight fit with the door. Once tapped into place, the sweep stops drafts and seems highly durable.

Helpful?6CYMUX08OL2C114979403
Feb 19, 2026
Terry
Item details
Color: White
Sold and shipped bySupply the Home
5 out of 5 stars review

Verified Purchase

I live in an old house and the door frames are no longer square angles. this product has blocked the gap under the door nicely even with it growing from one side to the other

Helpful?6CYMUX08OL2C114979403