This is a SUNRRA CCP520 Pool Filter Cartridges Pleatco PCC130 Unicel C-7472 4 PACK. It is new in box. FILTER SPECIFICATIONS: Length: 32 1/16″; Outer Dimension: 7″; Top/Bottom Opening: 3; Filtration Area: 4×125 sq. COMPATIBLE MODELS: Compatible with CCP 520, Clean and Clear Plus 520, PCC130, PCC130-PAK4, C-7472, R173578, Ultral-A7, FC-1978, SD-00164, 22505, AK-30434.