Pre-filter kits for SPR656, SPR657, SPR659, SPR660 filters - 2 holders + 10 pads PART NUMBER: RP SPM420 MPN: SPM420 $15.59 iWeb price Quantity discounts available QuantityPrice (0)No Reviews yet Special Order - Order Now Typical lead time: 14 days. Quantity -+ Print Ratings & ReviewsNo reviews availableBe the first to Write a Review