3M Indoor Patio Door Insulator Kit, 1-Patio Door (2 Pack) Included: (1) 7' x 9.3' film sheet, (2) rolls of tape each 1/2" x 500" Insulates one 6'8" x 9' patio door, Stops drafts, prevents frost build-up and reduces condensation Applies easily, shrinking tight, wrinkle-free and clear on glass Note: Insulation is thin and needs to be unfolded before use