This silicone edge trim creates a weatherproof seal for windows and doors. The U-channel design fits edges measuring 3mm to 5mm (1/8 to 13/64 inch), making it suitable for wood frame windows, casement windows, and various door applications. The 3-meter (9.84 ft) length provides ample material for multiple installations. Silicone material offers durability with flexibility, helping to insulate against drafts in winter and keep heat out during summer months.