Size: 1/4" x 1/4" x 20ft/6mm x 6mm x 6100mm(Backing x Brush x Length); Suitable for gaps from 0.08"-0.16"/2-4mm.Material: Made of polypropylene fiber, the weather stripping brush is thick and soft, no noise, no deformation, low friction, and has strong resistance..Easy to install: Simply insert it directly into the groove, making it convenient and hassle- to use. Sealing Ability, Works Perfectly With Sliding Doors / Move Windows Seal.Flexible and : The weather stripping can be easily customized and cut to size using scissors or a blade. It bends effortlessly and conforms to any shape, making it simple to install and ensuring a fit..Application: Slotted Silicone Wool Aluminum Alloy Window Seal Strip for PVC Sliding Doors and Windows - Windproof, Insulation, Soundproofing Accessories. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.