Hayward | W3S210T | ProSeries 21" Top-Mount w/ Valve Sand Filter | Reliable Pool Filtration System

The Hayward W3S210T ProSeries 21" Sand Filter (Top Mount) is a compact, high-efficiency filtration system designed for above-ground and small in-ground pools. Built with a corrosion-proof tank and advanced self-cleaning underdrain technology, it delivers excellent water clarity with minimal maintenance. Its top-mount configuration ensures simple operation, making it an ideal choice for smaller pool setups or areas with limited space. 

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Key Features

• 21" tank diameter for compact pool filtration needs

• Top-mount multiport valve for easy control and operation

• 360° self-cleaning underdrain for balanced water flow and consistent performance

• Corrosion-proof, precision-molded polymer tank for long-lasting durability

• Integral diffuser ensures even water distribution over the sand bed

• Uses standard #20 silica sand (not included)

• Large sand/water drain for quick maintenance and winterizing

• Easy-to-read pressure gauge for fast system monitoring

• Quiet, energy-efficient operation

• Suitable for above-ground and small in-ground pools

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Product Overview

The Hayward W3S210T ProSeries 21" Sand Filter offers a reliable, space-saving solution for keeping pool water clean and clear. Its top-mount design provides convenient access to the multiport valve, while the self-cleaning underdrain and integral diffuser ensure efficient filtration performance. The corrosion-resistant tank is engineered to withstand pool chemicals and outdoor exposure for years of dependable use. Perfect for small pool owners looking for a low-maintenance, high-quality filter, the W3S210T delivers sparkling results all season long.