HTM-4 Fender 13.5" x 34.8" - RedIn keeping with the Polyform tradition of quality, the HTM (hole-through-middle) boat fender was designed to provide maximum protection in a wide variety of applications. Vertical ribs for extra protection, reinforced tube ends to prevent lines from pulling through if the fender gets caught in a tight spot, and extra wall thickness to resist punctures and tears are just a few of the features this high-quality fender has to offer.The HTM Series fender is designed to provide protection and stand-off for larger vessels between 20 to 50 feet in length. Features: Even wall thickness for maximum strength and durability Molded-in ribs for strength and abrasion resistance Reinforced tube ends Designed for medium-duty use in both permanently protected and unprotected moorings Unique Polyform valve for years of service One (1) piece design