Twin Draft Guard is for windows and doors. It saves energy and money for keeping cold air out and warm air in. It moves with the door so you don't have to worry about bending over to re-position. Its fits doors and windows up to 32". Twin Draft Guard blocks drafts from both sides. It easily glides over all floors: carpet, wood, tile and linoleum. It has a durable cover that is machine washable. You can cut the tubes if needed to fit a specific size.