Unicel C-5431 Replacement Filter Cartridge for 30 Square Foot Hot Springs Spas/Watkins Mfg, Model FH/IH 220 Volt foam-marker Can be used alone with

Can be used alone with filter holder and cover (N750037) or with any Honeywell North N-series cartridge (with N750036)

Control Board

Dimensions: 8 1/16" x 5 1/16" x 3/4" (width x height x thickness)

Adjustable head harness assembly offers improved fit and comfort

Headband Style Hearing Protection

Unicel C-5431 Replacement Filter Cartridge for 30 Square Foot Hot Springs Spas/Watkins Mfg, Model FH/IH 220 Volt foam-marker Can be used alone withUnicel C 5431 Replacement Filter Cartridge for 30 Square Foot Hot Springs Spas Watkins Mfg, Model FH IH 220 Volt Diameter: 5 1 8 inch; length: 10 1 4 inch Top end cap: open, 1 15 16 inch inner diameter; bottom end cap: open, 1 15 16 inch inner diameter Pleat count: 157; filter media: 3 ounce reemay 2033; filter area: 30 square feet Get more efficient filtration and better water clarity with Unicel filters Longer time between cleanings; meets oem