The Sta-Rite S7D75-5 R is a compatible replacement for the following DE grid filters:
The Sta-Rite S7D75 Comp. Grid Filter - 18 x 13 7/16 is a center port filter measuring 13.18" (diameter) x 18" (length) and featuring 100% polypropylene cloth. This compatible Sta-Rite filter has high dirt retention capacity and a low pressure drop. This pool filter grid utilizes Diatomaceous Earth to efficiently purify swimming pool & spa water.