Merco Marine's edge and side protectors are blow molded from high density polyethylene, has excellent cold impact and chemical resistance and is UV protected. Attach with 1/2" lag or carriage bolts (not included). 72" long - 10" high - 2" thick. Attach with 1/2" lag or carriage bolts (not included). This product is being discontinued and is no longer available for purchase. - 5/7/2020