M-D Building Products 43336 36 in. White Vinyl CINCH® U-Shape Slide-On Under Door Seal
M-D Building Products 43336 36 in. White Vinyl CINCH® U-Shape Slide-On Under Door Seal
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M-D Building Products 43336 36 in. White Vinyl CINCH® U-Shape Slide-On Under Door Seal

4.2 stars out of 163 reviews
(4.2)|
163 ratings

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
  • Standard Fit: Fits standard 1-3/4 inch thick exterior doors
  • Dimensions: Measures 36 inches in length, 2 inches in width, and 1-3/4 inches in height
  • White Finish: Features a clean, white color to match most door styles
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Current price is $24.13
Price when purchased online
  • Free shipping
  • Free 30-day returns

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Columbus, 43215
Arrives by Thu, Feb 12
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Sold and shipped by Supply the Home
4.29967062698506 stars out of 5, based on 17002 seller reviews(4.3)
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$23.13
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Shipping, arrives by Fri, Feb 13 to Columbus, 43215
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Customer ratings & reviews

4.2 out of 5 stars
stars163 ratings70 reviews
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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 and bugs from entering.
  • : Offers lower price point compared to others.
  • : Provides a secure seal around the area.
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Showing 1-3 of 70 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?6CYMUX08OL2C195997122
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?6CYMUX08OL2C195997122
Nov 15, 2024
Will
Item details
Color: Brown
Sold and shipped bySupply the Home
5 out of 5 stars review

Verified Purchase

Well made, designed for snug fit trim/saw to size

Trim to size of door with a hand saw of some Type (I used a hacksaw.) then slide it on to bottom of open door. Note; the more it slides on the more resistance to moving it became. (To hold it securely in place when on completely.) To push it on: I used a hammer turned sideways to tap-apply even pressure on the side to avoid any possible impact damage to finish sliding it in place. I would buy it again.

Helpful?6CYMUX08OL2C195997122
reply from MDBuildingProductsSupport

Thank you for your review. We are glad to hear that you are enjoying your product!