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Frost King 90-ft x 1/8-in x 1/8-in Gray Rubber Window Weatherstrip

Name: Frost King 90-ft x 1/8-in x 1/8-in Gray Rubber Window Weatherstrip
Brand: Frost King
SKU: 3411754
Price: 6.68 USD
Availability: InStock
Rating: 4.2 (52 reviews)

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4.2

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Mortie is the original name in do-it-yourself caulking and it's still famous for quality and versatility. Mortie weatherstrip and caulking cord will seal windows effectively. But it's also widely used as a casketing material, sound deadener, insect barrier and crack filler.

For use with wood, plastic, metal, masonry, glass and concrete
Forms weatherproof seal on porous and non-porous surfaces
No caulking gun needed; just press in place with your fingertips
Won't harden so it seals tight, yet can be easily removed

General
Color/Finish Family	Gray	Maximum Working Temperature	175
Manufacturer Color/Finish	Gray	Tools Required	No
Material	Rubber	Weatherstrip Type	Window
Package Quantity	1

Dimensions
Length Measurement	90-ft	Width Measurement	1/8-in
Thickness Measurement	1/8-in

Features
Lowe's Exclusive	No	Waterproof	Yes

Certifications
CA Residents: Prop 65 Warning(s)	No

Warranty
Warranty	1-year limited

Labor
Other Items Required for Assembly	No

Miscellaneous
UNSPSC	30141500

Check out the Best Selling Weatherstripping on Lowes.com

Review

4.2 out of 5

52 Reviews

81% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The Mortite caulking product is reported to be an effective and versatile solution for sealing air leaks around windows and doors. Many customers find it easy to apply, flexible, and removable when needed. It appears particularly useful for sealing drafty old windows and reducing heating/cooling costs. However, a few customers had issues with the product not adhering properly to certain surfaces. Overall, the consensus is that it is a good temporary caulking option for keeping outdoor air out.

Customer review summary generated by AI, including incentivized reviews.

52 Customer Reviews

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Would Recommend

It does what I need it to do, very flexible!

mickJuly 13, 2026
Verified Purchaser

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good product

dont know what this is 5July 8, 2026
Verified Purchaser

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Worked great to seal my air conditioner

Would Recommend

Worked great to seal my air conditioner

zablocwjMay 1, 2026
Verified Purchaser

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Works!

Would Recommend

I liked this because it worked

J manApril 12, 2026
Verified Purchaser

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Not as described

Would Not Recommend

Did not hold as described

MikeM23February 19, 2026
Verified Purchaser

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Great bang for your buck

Would Not Recommend

Easy to use and install. Makes a big difference with the drafts being eliminated

GonzoFebruary 8, 2026
Verified Purchaser

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Not peelable caulk.

Would Not Recommend

Wanted peelable caulk. Did not carry.

SkollinsJanuary 29, 2026
Verified Purchaser

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Frost King: Featured Videos

COMPARE PRODUCTS

		Name	Current Item Frost King90-ft x 1/8-in x 1/8-in Gray Rubber Window Weatherstrip
		Ratings	52
		Weatherstrip Type	Window
		Material	Rubber
		Length Measurement	90-ft
M-D90-ft x 1/8-in x 1/8-in Gray Rubber Window Weatherstrip	M-D100-ft x 2-in x 2-in Clear Polyethylene Window tape Weatherstrip	Frost King3-1/2-ft x 1-1/2-in x 1/2-in White Foam Air conditioner Weatherstrip	M-D30-ft x 1-1/4-in x 3/16-in Gray Foam Marine/Automotive Weatherstrip	Frost King10-ft x 3/4-in x 7/16-in White Rubber foam Window Weatherstrip	M-D17-ft x 3/8-in x 7/32-in White Rubber Window Weatherstrip	M-D20-ft x 1/2-in x 1/4-in Black Silicone Door Weatherstrip	M-D10-ft x 1-1/4-in x 3/8-in Black Window Seal PVC sponge Window Weatherstrip	Alien Tape16-ft x 1-1/8-in x 7/8-in Clear Silicone Door Weatherstrip 3 -Pack
134	207	264	171	40	357	165	232	26
Window	Window tape	Air conditioner	Marine/Automotive	Window	Window	Door	Window	Door
Rubber	Polyethylene	Foam	Foam	Rubber foam	Rubber	Silicone	PVC sponge	Silicone
90-ft	100-ft	3-1/2-ft	30-ft	10-ft	17-ft	20-ft	10-ft	16-ft