The Thermwell Products Co., Inc. 62 in. x 210 in. Polyurethane Extra-Large Shrink Window Insulation (2-Pack) helps improve the R-value of a single-pane window by up to 90%. The insulation features polyurethane construction.
- Package contents cover 2 of most picture windows or 10 separate windows
- Helps improve the R-value of a single-pane window by up to 90%
- Polyurethane construction
- Double-faced shrink film tape included
- Includes two 62 in. x 210 in. sheets