Barbour Plastics Dock Bumper F2072 Gray. 3-1/2 inches x 1-3/8 inches. Produced from superior quality, marine grade flexible vinyl; the finest UV fungicide inhibitors are added for long life. Our dock bumpers are made in specifically designed shapes to suit any dock design or impact resistance requirements. They can be screwed, nailed or bolted into place. Sold by the Length: 6 feet.