Mini-Vent Air Admittance Valve Overall Diameter 2 in Shape Round Product Type Mini-Vent Air Admittance Valve Includes Protective Cover Standards ANSI/ASSE 1050 ANSI/ASSE 1051 Finish Plastic Gauge - Overall Length 2 5/8 in Material Plastic Silicone Color White Overall Height 2 5/8 in Ligature Resistant No Fits Pipe Size 1 1/2 in 2 in Connection Thread Type NPT Fits Drain Size 1 1/2 in 2 in Connection Type Threaded