MD Building Products 3/8 in. x 17 ft. Thermalblend Weatherseal-43846 - The Home Depot

MD Building Products

Model # 43846

Internet # 100353449

Store SKU # 435400

3/8 in. x 17 ft. Thermalblend Weatherseal

MD Building Products 3/8 in. x 17 ft. Thermalblend Weatherseal

This item has been discontinued.
The Home Depot no longer carries this specific product.

$9.89 / each


Model # 43846

Internet # 100353449

Store SKU # 435400

The MD Building Products Thermalblend 3/8 in. x 17 ft. Weatherseal is durably made from a silicone and EPDM rubber blend that retains its flexibility even in extreme hot- and cold temperatures. It helps seal gaps up to 3/8 in.

  • Seals out drafts and dust around doors and windows while helping to save energy
  • Enough material for 1 door or 2 average-size windows
  • Unique wave profile expands and contracts to seal gaps up to 3/8 in.
  • Remains flexible from -40 degrees to 140 degrees Fahrenheit
  • High-performance silicone/EPDM rubber blend

Info & Guides

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Assembled Depth (in.)  204 in  Assembled Height (in.)  0.375 in 
Assembled Width (in.)  0.375 in  Product Height (in.)  0.38 in 
Product Width (in.)  0.38 in  Unspooled Length (ft.)  17.0 
Builders Hardware Product Type  Foam Tape  Color Family  Whites 
Color/Finish  White  Density  19.0 
Material  Other  Returnable  90-Day 
Warranty / Certifications
Manufacturer Warranty  No 


Rated 4.3 out of 5 by 4 reviewers.
Rated 5.0 out of 5.0 by Excellent solution I have already recommended this product since buying it last week! We installed a high quality dog door in a sliding patio door frame. The narrow dog-door panel is the full height of the sliding door, with a long thermal pane window above the small dog door at the bottom of the panel. Regardless of the good quality, it needed much more weatherstripping around the panel than the manufacturer provided!! This white weatherstripping is wonderful -- matches the white vinyl on the slider and dog door panel perfectly. Easy install -- pushed right into the edges where there were slightly variable width gaps. Very soft, pliable, easy to cut. Did a top-to-bottom door section in 2-3 minutes. And the result is no leakage whatsoever. Looks like a permanent solution and like an original part of the door. January 10, 2011
Rated 5.0 out of 5.0 by Seals perfectly One of the reviews here incorrectly states that there is only 7' in the package. The weather stripping needs to be torn down the middle and then you have two long lengths of weather stripping. Make sure you clean the door jam before applying or it wont stick. If you're sealing a leak (and that's why you're buying this, right?) then there's probably a lot of buildup of dust and grim right where the tape needs to stick. I cleaned my jam until the paper towel no longer was brown from dust. December 2, 2013
Rated 2.0 out of 5.0 by only 7' in package product only has 7' in package not 17' as stated on package. when I went back for a second package found all of the packages at the store the same. need two packages to complete on door December 29, 2012
Rated 5.0 out of 5.0 by good product, works as it is supposed to. Great seal, flexable, compressable. Made a great seal around the door June 26, 2012
1-4 of 4


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