M-D Building Products Polar Block Patio/XL Window Insulation Kit Clear 84 x 110inch 4283

Improve the energy efficiency of your home with this quality patio door Insulation Kit. The 0.75 mil thick film is thin yet strong, creating an air-tight area that blocks air drafts from cold air and heat loss. The extra-large size of 84 inches x 110 inches is perfect for patio doors.