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M-D Building Products 3525 V-Flex Weatherstrip,17-Foot Length, 3/8-Inch Wide, White

4.1 out of 5 stars 67 customer reviews

List Price: $6.19
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  • V-Flex design stops air and moisture leaks
  • Flexible design expands and contracts to seal varying size gaps
  • Installs around top and sides of door to seal out drafts and dust
  • Self-adhesive; easy to install
  • 17-feet long and 3/8-inch wide
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$3.97 Add-on Item & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • M-D Building Products 3525 V-Flex Weatherstrip,17-Foot Length, 3/8-Inch Wide, White
  • +
  • Frost King M13WH V-Seal Weather-strip 7/8-Inch by 17-Feet White
  • +
  • M-D Building Products 3541 V-Flex Weatherstrip, 3/8-Inch-by-17 Feet, Brown
Total price: $14.75
Buy the selected items together

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Size Name: 1-Pack

Product Description

Size Name: 1-Pack

Product Description

Polypropylene with adhesive back. Prescored plastic weatherstrip to form ''V'' shaped which compresses to fill door and window gaps. 7/8'' x 17'.

From the Manufacturer

Use this superior, self-adhesive v-shaped plastic weatherstrip for sealing doors and windows against drafts and dust. The polypropylene with adhesive back makes installation quick and easy. A flexible design expands and contracts to seal varying size gaps and ensure a clean fit.

Product Information

Size Name:1-Pack

Technical Details

Part Number 3525
Item Weight 1.9 ounces
Product Dimensions 1 x 5 x 6.5 inches
Item model number 3525
Size 1-Pack
Color White
Material Plastic
Item Package Quantity 1
Batteries Required? No
Warranty Description All M-D products are warranted to be free from defects in material and workmanship if installed and used in strict accordance with our installation instructions. Our liability is limited to our sale price of any products proved to be defective or, at our option, to the replacement of such products upon their return to us.

Additional Information

ASIN B000CSGEIC
Customer Reviews
4.1 out of 5 stars 67 customer reviews

4.1 out of 5 stars
Best Sellers Rank #55,579 in Home Improvements (See top 100)
#188 in Home Improvement > Building Supplies > HVAC > Weatherproofing
#3,751 in Home Improvement > Contractor Supply
Shipping Weight 5.6 ounces (View shipping rates and policies)
Date First Available June 15, 2006

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: 1-Pack Verified Purchase
I've put this on three doors, and it works really well, but you need to think a bit about what you're doing.

First off, if you haven't used any kind of v-strip before - it folds in half, into a V. There's self-stick stuff on one outer side of the V. You look at where a door or window is going to close, and stick it on such that when the door closes it will press against the pointy side, offering little resistance and pushing the V flat. When the door opens the material will spring out, at most into more of an L shape. Therefore the maximum width it can seal is half the width of the tape (and realistically a bit less). So if you see a 7/8 wide tape that seals 3/8 like this one, well, that's why.

The nice thing is that there's a fair amount of flex to it, and if you have an uneven gap it will do a pretty good job of filling it, since the door will push down as needed. It's quite thin, so if it starts binding you probably didn't need any weatherstripping anyway. It's much less frustrating than various foam or rubber solutions where you pretty much have to exactly match the width (although those probably provide more insulation if you can get them to work). I have a door that's badly wider at the bottom than the top so this is pretty much the only kind of product that's going to work.

The downside is that the first time you use it, you kind of have to puzzle out where to stick it pointing in what direction and the directions aren't that good. But if you just fold it so the stickem is on the outside and walk over to a door and hold it up and orient it so that the stickem sticks to something and the pointy side points towards the door you'll see how it has to go.
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Size: 1-Pack Verified Purchase
Easy to apply and stays in place. Remains flexible in all weather (at least down to about 0 degrees Fahrenheit). The plastic is thin, which prevents binding, but I was worried that the plastic might lose its spring after being compressed most of the time. However, it remains indistinguishable from new after several months usage. Seals tightly enough to keep bugs out as well as air. Beats the old copper weatherstripping, which could get rough edged and catch garments and skin.
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Size: 1-Pack Verified Purchase
Unable to get this simple product locally at H Depot, Lowes. Unlike foam weatherstipping, where if not exactly the correct size, one ends up with poor seal or the door will not completely close, this is easy to install, seems to work well on multiple doors I have utilized this on, can easily remove if necessary.
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Size: 1-Pack Verified Purchase
I've used this for about 3 years now. When you have old double-hung windows, this makes excellent stripping where the windows meet in the middle. I put it on the bottom edge of the bottom rail of the top sash (window), point facing up. I also put it along the top of the top sash, and the bottom of the bottom sash. I would use it in the tracks as well, but I've been rebuilding the windows and putting "spring bronze strips" in the tracks. It's a lot more work, but permanent. I also use this V-Flex in the tracks behind and above the top pulley. I let it run long, behind the spring bronze strip, and it seems to work excellently.

Lastly, I also use this on old drawers, where wooden drawer-sides slide along wooden rails in the carcass. I got a quart can of "sanding sealer" de-waxed shellac. I paint the bottom of the drawer sides and top of the rails with it, to give this V-Flex a good place to grip. Then apply it flat--don't make it into a V--on both surfaces. It makes them GLIDE. Some are so worn down that the drawer is "low" relative to the hole in the face of the carcass. In this case, I double the layers of V-Flex right at the point where the drawer is almost closed, with the short piece under the full length piece. This allows the drawer to "ride up" a titch and make a better seal/close.

The glue on this stuff is quite intense. My most recent batch that I ordered here on Amazon sticks like crazy. The other stuff that I bought at a hardware store here in town must have been a bit older, as it wasn't quite as sticky.

But so far, so good! I recommend it all the time to anyone complaining of drafty windows and doors.
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Size: 1-Pack Verified Purchase
This stuff is great. It not only keeps out the drafts, but really helps knock down the noise that comes thru a doors with gaps. One wouldn't think a little piece of plastic would help with noise, but it makes a real difference. Also, keeps dirt and bugs from coming in thru those gaps. Very easy to install, and I have some installed that has lasted over 10 years. Seal up that old door!
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Size: 1-Pack Verified Purchase
After only a short time in use, the plastic separated from the adhesive, the adhesive stayed on the surface to which it was applied. I have been using this kind of weatherstrip for many years and never had this happen before. Maybe this is a problem with weatherstrip from only one batch, but I don't know if I want to risk buying this brand again.
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Size: 1-Pack Verified Purchase
This product is very easy to use. When I installed it I had an extra set of hands to make the process easier. I used this product around the jambs on three entry door systems. I only applied it to the latching side and head jamb. You could certainly apply it to the hinge side of the jamb, but it wasn't required in my case. I bought this product with the intent of sealing the minor gaps between jamb and door. The intent was to reduce air infiltration, dust and insects into the home.

I applied the tape after cleaning the jamb area with a rag lightly dampened with alcohol. You want the surface clean. Since my doors already have the foam compression weatherstrip on the jamb, I added this just in front of that for added performance. Now I see no daylight between door and jamb. There is no cold or warm air coming into the home so drafts have been eliminated. I am very pleased with the product.
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