Hayward | W3S310S | ProSeries 30" Sand Filter Side Mount 

The Hayward W3S310S ProSeries 30" Sand Filter (Side Mount) delivers reliable, high-capacity filtration for large in-ground pools, combining robust construction with advanced sand filtration technology. Designed for side-mount plumbing configurations, it provides installation flexibility while maintaining superior water clarity. Built for long-term durability, this filter is ideal for heavy-use residential or commercial applications.

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Key Features

• 30" tank diameter for large pool filtration capacity

• Side-mount configuration for flexible equipment pad layouts

• 360° self-cleaning underdrain system for balanced water flow and maximum efficiency

• Corrosion-proof, precision-molded polymer tank for long service life

• Integral diffuser for even distribution of water over the sand bed

• Uses standard #20 silica sand (not included)

• Large sand/water drain for easy servicing and winterizing

• Pressure gauge for quick system monitoring

• Quiet and energy-efficient operation

• Suitable for both residential and commercial pools

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Product Overview

The Hayward W3S310S ProSeries 30" Sand Filter combines dependable performance with installation versatility. Its side-mount design accommodates specific plumbing requirements, while the advanced underdrain and diffuser system ensure optimal water flow and superior filtration. The corrosion-proof tank is built to withstand the elements and pool chemicals for years of reliable service. Perfect for pool owners seeking low-maintenance, high-performance filtration, this model offers consistent water clarity and dependable operation season after season.