The indoor patio/large window kit contains everything you need to insulate one standard two panel patio door. The kit contains one sheet of 84-by-120-inch crystal clear plastic film, one roll of 1/2-by-432-inch double-sided tape and six alcohol surface wipes. Once taped to the door or window frame, the crystal clear film heat shrinks with a blow dryer to seal out drafts and cold. For indoor use on painted or varnished wood, aluminum and vinyl surfaces only.