The Filbur FC-3915 FC-3915M Pool & Hot Tub Spa Filter is a compatible alternative pool and hot tub spa replacement for Hot Springs Spas 31489, Watkins WA30TC-3, Unicel C-6430, and Pleatco PWK30 cartridges. SP-PS-3915 is designed to fit spas by Hot Springs Spas and Watkins Manufacturing.

Important Specifications:

• Diameter: 6″
• Length: 10 ” (10.5″)
• Top Hole: 1 ” (1.9375″)
• Bottom Hole: 1 ” (1.9375″)
• Top Style: Open
• Bottom Style: Open
• Media Area: 30 sq. ft.
• Weight: 3 oz.

Compatible Filter Model/Part Numbers:

• Aladdin 13004
• Baleen AK-5005
• Darlly 60301
• Excel Filters XLS-602
• Filbur FC-3915, FC-3915M
• Harmsco H-6430
• Hot Springs 0969601 Tri-X Filter
• Magnum HS30
• Pleatco PWK30, PWK30-M
• Pure N Clean PC-3915