Water Barrier The shower door bottom seal strips with drip rail, effectively stops water leakage, and helps create a clean and dry bathroom. Dimensions Length: 36 inch. The shower door bottom seal strip can be easily cut to fit in 3/8 inch (10mm) thick frameless glass door, with a hacksaw or utility knife. High Quality The shower door bottom seal strips are composed of high quality ultra clear PVC material. It is easy to maintain, durable to use, and will not fade or change color. Sturdy Package 2PCS of shower door bottom seal strips are well packaged in a sturdy cardboard tube, to prevent damage in transport.