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Replacement Filter Cartridges For
Rainbow (OEM) Spa Filters
Unicel Replacement Filter Cartriges
Replacement Cartridges are made from 100% polyester filter media and feature sharp pleat folds that maximizes spacing between pleats. Tough urethane end caps assure durability for the life of the cartridge and rigid PVC cores allow maximum flow at minimum pressure loss.
Model # Rainbow (OEM) Filter Sq. Ft. Add to Cart
C-4625 4-15/16" x 13-5/16" Dynamic Series I, Inline 25 $26.99
C-4637 4-15/16" x 13-5/16" Dynamic Series I, II, III 25 $33.99
C-4950 4-15/16" x 13-5/16" Dynamic Series II, III 50 $29.99
C-4975 4-15/16" x 19-7/8" Dynamic Series II, III 75 $39.99
C-4999 4-15/16" x 26½" Dynamic Series II, III 100 $49.99
C-4401 4-15/16" x 4-5/8" Dynamic Series IV (Set Of 2) 35 $37.99
C-4405 4-15/16" x 6-5/8" Dynamic Series IV (Set Of 2) 50 $39.99
C-4429 4-15/16" x 10-3/8" Skim Filter 30 $23.99
C-4335 4-15/16" x 9¼" Skim Filter 35 $29.99
C-2302 2-7/8" x 17-1/16" (1-1/16" ID) High Flow 14.5 $15.99
C-2303 2-7/8" x 17-1/16" (2-1/8" ID) Chloro 8.5 $15.99