Hayward SX200G Manual Air Relief Replacement for Select Hayward Sand Filter<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Manual air relief replacement</li><li>Fits hayward pro series plus sand filter models s311sx， s311sxv， s360sx</li><li>Also fits hayward s200， s240 and pro series sand filter models s210s， s244s， s310s</li><li>Weighs 11.1-pound</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41HOHapHblL.jpg" noproxy>