Robelle 3802–04-BLK Pool Cover Weights, 4-Pack, 2 ft. x 2 ft. Corner, Black

• 4-Pack Heavy Duty 2 ft. Corner Pool Cover Weights for Winter Pool Closing
• Heavy Duty .33 MM Thick Vinyl constructed 107% heavier than industry standard.
• Since 1973 Robelle has been making the best products to close your pool. Use the best pool closing products designed with over 50 years of experience.
• Prevents Winter Pool Cover From Falling Into Pool.
• Single Chamber Design For Easy Filling.
• Fill Halfway With Water to Allow For Ice Expansion.
• If you have trouble closing the valve please use a hair dryer to loosen before closing.

Product Description Robelle corner tubes are constructed of durable heavy-duty, puncture resistant vinyl. The corner tube has a conveniently placed, leak-proof valve that is easy to fill with a garden hose. Corner tubes will keep your pool cover in place all winter long. Water tubes should be filled half-way to prevent popping caused by expansion if the water freezes. Safety Warning Ensure corner tubes are used to keep the pool cover in place and fill water tubes halfway to prevent popping due to ice expansion.