Pentair W20CL(S1) Dustrust Cartridge Filter 2-pack

Product Description

The PENTAIR W20CL(S1) is a replacement cartridge filter element sold as a 2-pack for pool and spa filtration systems. Cartridge filters of this type remove debris, dirt, and fine particulates from recirculating water by forcing flow through a pleated filter media. The W20CL(S1) is designed as an OEM-style replacement element, making it a straightforward swap for service technicians and pool professionals maintaining existing filtration equipment. Two cartridges are included per pack, supporting setups that require matched elements or allowing one spare to be kept on hand during the service cycle.

This cartridge filter 2-pack is suited for residential and light commercial pool and spa applications. Pool service technicians typically install or swap cartridge elements during routine maintenance calls when flow rate drops, pressure differential rises, or the media becomes fouled beyond cleaning. The pack format reduces per-unit cost and ensures a matching replacement is available for dual-element filter housings commonly found in mid-size pool systems.

Key Features

• 2-pack configuration — two matched cartridge elements per package
• OEM-style replacement design for compatible PENTAIR filter housings
• Pleated filter media construction for effective particulate removal
• Supports routine cartridge swap service without system modification

Compatibility

Designed as an OEM-style replacement cartridge for compatible PENTAIR pool and spa filtration systems. Verify filter housing model and cartridge dimensions before installation to confirm fit.

Installation Notes

Cartridge filter elements are typically serviced by licensed pool technicians or qualified service professionals. Shut off the circulation pump and relieve system pressure at the air relief valve before opening the filter housing. Inspect the housing o-ring and manifold for wear during each cartridge replacement. Follow local pool equipment codes and manufacturer guidelines for disposal of spent filter media.

Technical Specifications

• Pack Quantity: 2 cartridges per pack
• UPC: 051678001523

Standard Information

• Brand: PENTAIR
• Manufacturer Part Number: W20CL(S1)