Unicel C-5374 Filter Cartridge general-purpose The cartridge/filter is NIOSH (National

The cartridge/filter is NIOSH (National Institute for Occupational Safety and Health) approved for environments containing certain organic vapors

Hammer heads are hardened to precisely controlled temperatures for durability and strength

This product is a paint roller

Manual hand motion drives the dual pistons directly into the Duo-Pak cartridge

Unicel C-5374 Filter Cartridge general-purpose The cartridge/filter is NIOSH (NationalUnicel filter cartridges are simply the finest replacement filters you can buy for your pool or spa, being made of the finest materials to meet or exceed OEM filters. Its heavy duty polyester is designed to last far longer than cheaper alternatives, while having more pleats to improve filtering capacity. Best of all, Unicel filters are made right here in the USA for the highest possible quality, allowing you to buy with confidence. Dimensions Length: