Unicel UHD-SR50 Replacement Filter Cartridge 52 sq. ft. | Sta-Rite Posi-Flo 50 Door & Gate Alarms The product is not flammable

The product is not flammable or carcinogenic so it is safe to use around your family and pets

Reemay 2040 polyester media and a 3-1/2" female pipe thread (FPT) top cap

Your Hayward SwimClear system requires four cartridges — replace all four at the same time to maintain balanced flow and consistent filtration across the manifold

Fits any standard size telescopic pole

the floating fountain base can be placed anywhere around the pool

Unicel UHD-SR50 Replacement Filter Cartridge 52 sq. ft. | Sta-Rite Posi-Flo 50 Door & Gate Alarms The product is not flammableThe Unicel UHD SR50 is a premium UHD Series replacement filter cartridge delivering 52 sq. ft. of heavy duty filtration area for Sta Rite Posi Flo 50 pool and spa filter systems. Built with 4 oz. Reemay 2040 heavy duty polyester filtration media a full ounce heavier than standard 3 oz. cartridges the UHD SR50 delivers superior dirt holding capacity, enhanced durability, and extended service intervals. With 195 precision formed pleats maximizing media