$18.95Threaded Spa Filter by Clarathon. Diameter: 6" Length: 9". Top: Handle. Bottom: 1-1/2" fine thread. Surface Area: 50 SF. Premium Hot Tub Filter Replacement for Unicel 6CH-47 Pleatco PTL47W-P4 Filbur FC-0315 Other 14701. Also available in Antimicrobial version, FC0315M. May replace filters in…