Keep road debris from marring your boat's hull. Constructed of 16-gauge steel. Corrosion-resistant, galvanized finish can be painted or left plain Available in four sizes: For 8" tires: 6"H x 7"W x 20"L For 12" tires: 6 1/2"H x 7"W x 23 1/2"L For 13" tires: 11"H x 8"W x 27 3/8"L For 14" and 15" tires: 13"H x 9"W x 31 1/2"L Sold individually