Diameter: 5 7/8"

Length: 10 1/2"

Top and Bottom Hole: 1 15/16"

OEM: Hot Springs Spas. Hydropool Industries

Unicel: C-6330

Filbur: FC-3915

Single filter only

Watkins Hot Spring Spas

Warranty Coverage: Replacement Filter Cartridges come with a 30 Day Limited Manufacturers Warranty. The manufacturer of these filter cartridges warrants their filter cartridges against defects on workmanship and materials. This warranty will be void if the filter cartridges become damaged as a result of improper installation or use. Warranty does not cover labour charges, cost of lost water or chemicals, or any other damages that may occur.

Start a Warranty Claim:To begin a claim please email [email protected] with a photo showing the defect(s)/damage to your Replacement Filter Cartridge and include a brief explanation of what occurred.