PoolStyle WTB-1018 4' x 4' 16 Gauge Equalizer Pillow Solid Cover The Hayward ProSeries W3S310S 30"

The Hayward ProSeries W3S310S 30" Side Mount Sand Filter is engineered for superior pool water clarity and low-maintenance operation

The versatile design suits modern

Engineered for superior filtration efficiency

standard flanged inlet and outlet

It's designed to provide maximum energy savings with reliable

PoolStyle WTB-1018 4' x 4' 16 Gauge Equalizer Pillow Solid Cover The Hayward ProSeries W3S310S 30"The PoolStyle 4' x 4' equalizer pillow helps prevent water and debris from collecting in the center of your pool cover during winter. Made from 16 gauge durable vinyl, this heavy duty air pillow provides pressure relief when pool water freezes. By compressing as ice expands, it helps protect your pool walls and liner from potential damage. The pillow also makes it easier to drain off excess water, keeping your cover more manageable during the off