Pentair WC137-516P Collector Hub Assembly Replacement Sta-Rite Pool and Spa Sand 18-Inch Sand Filter<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Collector hub assembly replacement</li><li>Fits Pentair Sta-Rite Waterford pool and spa sand filter system models JSAL180D， JSAL180E， JSALS180E and JSAL180F</li><li>Also fits Pentair Sta-Rite Cristal-Flo high-rate T-BP series pool and spa sand filter model T-170BP-1</li><li>Measures 21-inch length by 5-3/4-inch height by 5-3/4-inch width</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31HZWBME5%2BL.jpg" noproxy>