Simply Conserve Window Insulating Kit Indoor Film 5-Pack 36"x60" Model # WK64210EF Enough to seal Five 36 x 60 windows Easy to use shrink film to help seal out cold air and prevent heat loss. Details Eliminate condensation, cold drafts, and heat loss. A hair dryer shrinks the window insulator film to form a smooth, tight, and transparent barrier against the weather. Double-sided tape securely holds the plastic film in place. The film lasts 15 months and completely breaks down in 24 months to help reduce the effect of single-use plastics. Key Features Seals out cold air Prevents condensation Crystal clear shrink film No special tools needed Helps save on heating and cooling costs 5 pack Installation You will need a blow dryer, scissors and a tape measure. Step 1: Apply double-sided tape around edge of window. Step 2: Remove liner. Step 3: Measure taped area and cut film to size leaving a 2? overlap on all sides. Step 4: Press film in place on tape at top of window, then sides and bottom. Step 5: Shrink film with hair dryer to remove wrinkles (keeping the dryer 1/4? away from film?s surface).