The WTB-1018 Equalizer Pillow is a 4 ft. by 4 ft. air pillow to be used with Above Ground Pool Winter Covers.

The 4 x 4 standard air pillows are used after closing your and covering your above ground pool:

• to make it easier to remove pooling water and debris
• when your pool water freezes, an air pillow compresses to relieve pressure on your pool walls
• to lift your winter pool cover out of the water to prevent it from freezing in the water