Flange, Compatible Pipe Size 1 1/2 in, Compatible with Brand Armstrong, Compatible with Grainger Part Number 32UN17, 32UN86, 32UN87, 32UN90, 32UN91, Compatible with Series Astro 2, For Use With Potable Systems Yes, Compatible with Manufacturer Model Number 143TTDR4037, 143TTDR4042, 143TTDR4049, 145TTDR4011, 182202-650, Compatible with Pump Type In-Line Circulating Pumps, Flange Material Lead Free Bronze, Includes (2) Flanges, (2) Gaskets, Bolts, Nuts, Package Quantity 2