Filler strip, sash channel, for all applications fitting glass to sash channel not requiring weatherlip type of filler. Check your old filler strip to find thickness needed. This is the highest quality linen back, rubber cork composition for a professional job on swingout windshields, door vent windows & convertible side windows having metal frames, as well as many side or door windows on closed bodies. Please specify thickness req'd. Be sure to measure length carefully, as this item is NOT RETURNABLE.