Wall Foam for 21ft Round Pool

*Note that this Add-on Accessory cannot be purchased individually at this time.  This product must be purchased as part of a Pool Package.  Click here to view Above Ground Pools. PROTECT AGAINST PUNCTURES! INSULATION BENEFITS NEARLY ALL OF THE HEAT LOST FROM A POOL’S WATER EXITS THROUGH THE WATER’S SURFACE, NOT THROUGH THE POOL WALLS IN AN ABOVE-GROUND POOL OR INTO THE GROUND WITH AN IN-GROUND POOL. BECAUSE OF THIS, IN-WALL INSULATION IS OF LIMITED BENEFIT. HOWEVER, INSULATION OF THE POOL’S WALLS CAN HELP MAINTAIN THE WATER TEMPERATURE OF THERAPY POOLS, WHICH MUST REMAIN AT A CONSISTENTLY HIGH TEMPERATURE, AND SOLAR-HEATED POOLS, WHICH ARE MORE DIFFICULT TO HEAT THAN GAS-HEATED POOLS. INDOOR POOLS NEAR EXTERIOR WALLS MAY ALSO BENEFIT FROM INSULATION. EXTRA LAYER OF PROTECTION WALL FOAM WILL PROTECT YOUR POOL AGAINST PUNCTURES FROM SHARP EDGES YOUR POOL WALL MAY HAVE, IT ALSO WILL PROTECT YOU AGAINST PUNCTURES FROM YOU SWIMMING POOL’S WALL BOLTS. CORROSION PROTECTION WALL FOAM WILL HELP STOP OR SLOW DOWN CORROSION EXACERBATED BY MOISTURE. FOAM WILL KEEP THE WALL FROM BECOMING EXPOSED TO MOISTURE. THIS WILL LENGTHEN THE LIFE OF THE SWIMMING POOL WALL. HIGH QUALITY * PROTECTS LINER * CUTS HEAT LOSS * REDUCES METAL WALL CORROSION