Pentair R172224X Black Drain and Vent Valve Replacement Pool/Spa Filter and Feeder<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Drain and vent valve replacement</li><li>Fits Pentair Dynamic series I， II RTL/RCF and III RTL/RCF inline pool/spa cartridge filter models RDC-25， RDC-25S， RDC-50， RDC-50S</li><li>Also Pentair Rainbow high capacity automatic chlorine/bromine pool and spa feeder models HC-3315， HC-3330， HC-3340</li><li>Also compatible with Pentair Predator II mini-cellular media pool/spa cartridge filters and Dynamic RCF-RTL series cartridge filter chlorine/bromine dispensers</li><li>Measures-8/9-inch length by 22/25-inch height by 3/4-inch width</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31h4IV3hLZL.jpg" noproxy>