Sioux Chief 250-696R122P AAV W/ 1-1/2 to 2 in Dual Fit Adapter & Fire Rated OxBox Kit

Tomahawk Air Admittance Valve, Series: 250, 1-1/2 to 2 in Thread x Hub Adapter, ABS, 2-1/8 in H x 2-11/16 in W