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M-D Building Products Clear Indoor Window Shrink Film 84 in. W X 25 ft. L
M-D Building Products Clear Indoor Window Shrink Film 84 in. W X 25 ft. L
M-D Building Products Clear Indoor Window Shrink Film 84 in. W X 25 ft. L

M-D Building Products Clear Indoor Window Shrink Film 84 in. W X 25 ft. L

Made in America

Support American manufacturers + independent hardware retailers in one purchase.

Seals drafty windows in minutes with included mounting tape - just trim to fit and stop the cold air.
M-D Building Products MPN 43101 In Stock & Ready to Ship
$21.99
Ships oversize · details below
Ships oversize Bulky items take a full box even when they’re light, so shipping runs more than a small parcel. Big and bulky? This is one to grab locally — no box, no shipping. Check your local store below ↓

About Product Overview

Cold drafts sneaking through old window frames waste energy and money all winter long. This M-D Building Products window shrink film from the Polar Block line seals up windows with a clear plastic barrier that blocks air leaks, and it includes mounting tape so you can get started without hunting down extra supplies. At 7 feet by 25 feet, there's enough here to cover several windows, and you simply trim it to fit with scissors.

  • Brand: M-D Building Products, Polar Block
  • Size: 7 ft x 25 ft, cut to desired length
  • Material: Plastic, 0.75 mil thickness
  • Mounting tape included
  • For indoor use

The Details Specifications

Brand M-D Building Products
Model / MPN 43101
UPC 043374431018
Weight 1 lbs
Country of Origin USA
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

Go ahead. Check.

You're going to price-check us against Amazon, Home Depot, and Lowe's. Everybody does. Good — open all three tabs. We'll wait. Then look hard at what you're actually being handed over there.

On Amazon, start with these four questions before you click buy.

01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

Most manufacturers only honor a warranty when the unit came through an authorized dealer. We're authorized for M-D Building Products. A third-party marketplace seller usually isn't.

03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

Who you call when it breaks

Ours is a phone number with a person behind it who has held this product. M–F, 6 AM – 5 PM Pacific. (866) 469-8556

The big boxes don't care if your hardware store survives.

Amazon, Home Depot, and Lowe's are built to pull every hardware dollar out of your town. When the local shop can't keep the lights on, the counter where somebody actually knew which part you needed goes with it. We're built the other way: real brands so you're never stuck on a marketplace, and a straight answer to buy it down the street when that's the better call. Support independent hardware — it doesn't restock itself.

Why we tell you to shop local
Authorized dealer · M-D Building Products

Or skip the tabs entirely and buy it down the street. Find a store near you →

Shop Local · Support Independent

Every order helps keep your local hardware store on the corner.

Why we built NHG
You might find it for less locally. Independent retailers often offer competitive pricing — some products are even cheaper in-store than online.
Real expert advice — not search results. Independent hardware staff know their inventory and the local conditions you're working in.
Keep the neighborhood working. Every dollar spent at an independent retailer returns roughly 3x more to your local economy than at a national chain.

Ask our counter. Or theirs.

Most hardware stores can do more than you think. If we can't help you, the folks down the street probably can — just ask at the counter.

What we offer
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Their Counter
Try local first · we'll wait

The stores we send you to are local and independently run — often for generations, the kind of place where someone behind the counter knows the regulars. We don't own them. We just think they deserve the foot traffic. They can put most of what we sell on their next truck. Ask there before you check out here.

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About our directory. National Hardware Group is an independent retailer and directory. The local stores we list and link to are separately owned and operated — we have no ownership stake in any of them, and most pay us nothing to be included. That includes plenty of stores flying a familiar banner that people don't realize are locally owned and run, not operated by a corporation. Store owners can choose to upgrade their listing for an enhanced presence or pickup features, but the base directory is free, and inclusion is never a paid endorsement.

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