Premium "EK" Sealing System for use on Slide Out Rooms. Made from advanced materials for extended durability and years of reliable service. This "EK" base unit is mounted to side wall using adhesive strip (included). Screws or other fasteners may also be used to ensure permanent installation. This base unit includes wiper and is designed to be used with matching "EK" D Seal. May easily be cut to length for proper fit.