Robelle Deluxe Winterizing Cover Blox

Robelle cover blox are the best alternative to water tubes. Unlike water tubes, cover blox will never split or break because of water expanding into ice. This product is over four times thicker than water tubes and doesn't have seams, so you will never have to replace a cover blox. Easier to store than water tubes, because you can stack cover blox. 16'X32' rectangular requires 32 cover blox. 20'X40'. Rectangular requires 40 cover blox. Cover blox measure 3 ft. Long, 8 inches wide and 4 inches tall.

• Color: Black