Unicel C-5374 Filter Cartridge general-purpose Hammer heads are hardened to

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

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

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

uniform lighting in pool places you never thought possible

lighting uniformity

Unicel C-5374 Filter Cartridge general-purpose Hammer heads are hardened toUnicel 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: