M-D Building Products Polar Block 3-Window Insulation Kit Clear 42 x 62inch 4440

Keep your house warm all year with this three-window Insulation Kit. With a clear 0.75 mils thick film, it creates a tight seal for windows up to 42 x 62 inches, minimizing heat loss and keeping unwanted drafts out. The light but strong material is easy to install, providing long-term insulation without obstructing your view.