Pentair Pentair 261003 Manual Air Relief Assembly Replacement Nautilus Pool and Spa D.E. Filter

This manual air relief assembly is designed to use with Pentair Nautilus pool and spa D.E. filter models NS24, NS36, NS48, NS60, NS72. Measures 8-3/4-inch length by 4-1/4-inch height by 4-1/4-inch width.