3-Inch Male Threaded Connection – Air Admittance Valve Designed for easy installation on 2" drain, waste, and vent systems igh-Capacity Design – Rated for 160 DFU on branch lines and 500 DFU on stack applications, providing reliable venting for demanding residential and commercial plumbing systems. Durable Impact-Resistant Body – Built to withstand jobsite conditions and rough handling, the rugged body construction ensures long-lasting performance in residential and commercial plumbing systems. Compact & Lightweight Design – Measures 4.92" (H) × 3.15" (W) × 4.92" (L) and weighs just 0.5 lb, making it easy to install in tight spaces without adding bulk to your plumbing setup. Durable Construction & Reliable Operation – Built with an impact-resistant ABS body and a flexible synthetic rubber membrane, this air admittance valve performs in temperatures from -40°F to 150°F and opens at -0.01 psi for consistent, dependable venting.