The new Twin Draft Guard Ultimate is 50 percent bigger. This double-sided insulator saves energy and money. Fits doors and windows up to 36 inch. Moves with the door, no bending to reposition. Airtight, draft proof seal retains heat and repels moisture. Glides across wood, tile, even carpet. Trim the twin channels to fit any length door or window. Keeps out noises, insects, toxic fumes. Specifications. Theme: Twin. Material: Water Repellent Micro Fleece. Length: 36 in.. Color: Brown.