1.HIGH QUALITY WEATHERSEAL - High tolerance, can be warped without distortion, durable and flexible; High density felt, soft and no harm to your hand. Neatly coiled up in carboard envelop, not easy to be knotted and straggly. Fine and closely woven, less lint, can stand wear and tear, a longer service life 2.WIDE APPLICATION - Felt weather stripping, widely used for side gaps on sliding door, french door, screen door, patio door, commercial door, windows, armoires, wardrobe, closet and etc. Help you block draft, dust, water and light, bring you healthy and comfortable living surroundings 3.ECONOMIC & PRACTICAL - A small investment on windows & doors insulation to improve energy efficiency by sealing gaps and leaks, and prevent conditioned air to escape, save your old and creaky door and window 4.DIY INSTALLATION - Remember to Clean & dry the surface, simply peel off the backing film while applying to form a tight seal. Leave it still in first 12h to make the strip better stick to the surface