Riverside Universal Canoe Replacement Blocks, sold by the pair. Features non-skid laminate foam blocks. Compatible with factory rack or no rack. 4 H x 3.75 D x 6.75 W.
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NRS Universal Canoe Blocks Grey Set of 4 : Northwest River Supplies: Sports & Outdoors
Canoe Blocks - Spring Creek
What are the best Kayak Accessories according to Reddit?
Riverside Cartop Carriers Seattle Sports RS - 6 Standard Canoe Replacement Blocks (Pair), Gray, Black (068622) : Sports & Outdoors
Foam Block Kayak Carrier
Canoe Stabilizer Float Kit – Minnesota Canoes
What are the best Kayak Accessories according to Reddit?
Seattle Sports Riverside 7-Inch Universal Canoe Replacement Blocks (Pair), Gray : : Sports & Outdoors
Seattle Sports Sherpak Universal Kayak foam Block Carrier with Non-SKID and Anti Slip bottom for Car Roof Top. Made in U.S.A. (Pair, 14 inch)- Gray : Automotive Kayak Racks