A new Black Friday feature is coming...A new Black Friday feature is coming...

Learn More
Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Missed This Deal? Get alerts when similar deals are posted.
expired
expired
NeedMoCoffee | Staff 1.9K Views
Feb 11, 2026 1:37 PM

6'-8" x 19.5' 3M Clear Film Indoor Window Insulation Kit $7.99 + Free Shipping w/ Prime

$7.99

$37

78% off
Woot!
Visit Woot!

Why are you downvoting this deal?

Good Deal?
1Comments
Save
Share
Deal Details
Woot [woot.com] has 6'-8" x 19.5' 3M Clear Film Indoor Window Insulation Kit back in stockfor $7.99. Shipping is free w/ Prime. Otherwise shipping is $6.
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Woot [woot.com] has 6'-8" x 19.5' 3M Clear Film Indoor Window Insulation Kit back in stockfor $7.99. Shipping is free w/ Prime. Otherwise shipping is $6.

Community Voting

Deal Score
+12
Good Deal
Bad Deal

Why are you downvoting this deal?

Visit Woot!

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!

1 Comment

Sign up for a Slickdeals account to remove this ad.

Feb 12, 2026 4:46 AM
278 Comments
Joined Oct 2015
CoffaeFeb 12, 2026 4:46 AM
278 Comments
I am an energy efficiency consultant, and usually I go for the more common solutions such as insulation,, fixing ductwork and installing better appliances. However, I have this one old window that hasn't been changed in my bathroom. It is a single-pane, leaky and I can see the outside through the hole where the crank is. I got fed up this year and tried window film as we just never get a chance to replace it with a dual-pan low U-Value (low-conductivity) window. The film worked way better than expected! The bathroom is several degrees warmer this winter, and the window-sill is even cleaner as a bonus. It'll probably only last a year and I'll have to do it again, but it is worth it. To install, you first carefully unfold the layers, cut to the size of the whole window including lentil, sill, and frame. Then stretch it over the frame and rub to stick it to the surface, Then comes the heat gun where the film shrinks to taut around the frame. It is still clear after 2 months. Kool, cheap fix.

Join The Conversation

Share your experience with the Slickdeals community

Share information with the community. Please follow our Community Guidelines and be kind!

Related Searches

Home & Home ImprovementBuilding & Remodeling Supplies3MWoot!