Non genuine Rainbow (Onga) replacement spa cartridge RDC50 – 50 sq ft, 200 pleats Measures 340mm x 127mm with 54mm holes **Please check your measurements as well as the information on the cartridge filter, as we cannot accept responsibility for incorrect orders. We will accept returns of cartridges in original box and condition but postage will be at the customers expense. *PHOTO FOR ILLUSTRATION PURPOSES ONLY