POOLPURE 6CH-940 Spa Filters for Hot Tub, Replaces Pleatco PWW50P3, PWW50-P3, Fi
💧【NSF Certified & Compatibility】NSF/ANSI 50 Certified. Note: Features 1 1/2”(3.7cm) SAE thread, PLF6CH-940 poolpure spa filter for hot tub is compatible with PWW50P3 (Not PWW50P4). Bottom: 1 1/2” SAE Thread.