M-D Building Products 43824 1-1/2 in. x 3/4 in. x 36 in. Gray Vinyl Replacement Insert for Heavy Duty Thresholds
M-D Building Products 43824 1-1/2 in. x 3/4 in. x 36 in. Gray Vinyl Replacement Insert for Heavy Duty Thresholds
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M-D Building Products 43824 1-1/2 in. x 3/4 in. x 36 in. Gray Vinyl Replacement Insert for Heavy Duty Thresholds

Size:1-1/2 in. x 3/4 in. x 36 in.
Actual Color:Gray

Key item features

  • Flexible Vinyl: Made of flexible vinyl to seal the bottom of the door
  • Replacement Insert: Use to replace a worn or damaged threshold insert
  • Dimensions: 1-1/2 in. W x 3/4 in. H x 36 in. L after installation
  • Gray Color: Comes in a neutral gray color
  • Protective Seal: Seals to protect against drafts, moisture, dust, and insects
  • Easy Trimming: Easy to cut with scissors for trimming to desired length
  • Installation Tip: For easier installation, apply soap and water to insert before replacement
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was $14.76
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Sold and shipped by Supply the Home
4.3104868518322945 stars out of 5, based on 18938 seller reviews(4.3)
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Customer ratings & reviews

4.4 out of 5 stars
stars75 ratings57 reviews
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Reviews summary

Pros

  • : Comes with instructions and minimal tool requirements.
  • : Made from durable and sturdy construction.
  • : Offers lower prices than hardware stores.
  • : Included on packaging and easy to follow.
  • : Forms a tight seal to prevent cold air from entering.

Neutral

  • : Can be easy to install, but may not include the aluminum threshold.
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Showing 1-3 of 57 reviews

Jan 27, 2026
Kreyne
Item details
Size: 1-1/2 in. x 3/4 in. x 72 in.
Color: Gray
5 out of 5 stars review

Verified Purchase

Great product! Double the length is A

I was looking for the 36 inch length replacement length and since the offering is for 72" long and the product can be easily cut with scissors, double the length needed for the same price is a great deal.

Incentivized Review
Helpful?43LNDNR10V8J19869453
Oct 22, 2025
ThisIsWhatIthinkNow
Item details
Size: 1-1/4 in. x 3/8 in. x 36 in.
Color: Gray
Sold and shipped byReliable Home Products
5 out of 5 stars review

Verified Purchase

I have a 45-year-old house with the rubber threshold insert worn off. I looked everywhere to find a replacement match. We had gaps where the air would leak in that I wanted to eliminate with the new insert. This one looked like it would slide into the threshold channel. Sadly, it was not a size match. However, I unscrewed the metal threshold frame and put it underneath it. It raised the threshold just the right height to close the gaps under the door and still open smoothly. So, this winter we won.t be getting a bad draft. No more putting a blanket in front of the door bottom.

Helpful?43LNDNR10V8J19869453
Dec 20, 2025
OTIC
Item details
Size: 1-1/4 in. x 3/8 in. x 36 in.
Color: Gray
Sold and shipped byReliable Home Products
5 out of 5 stars review

Verified Purchase

Replacement vinyl for old thresholds

Was so glad to find these. Had two old thresholds and these were exactly what was needed. Perfect fit so I'd say they were exact factory replacements.

Helpful?43LNDNR10V8J19869453