Rheem AP12941 Aluminum Water Heater Drain Pan with Fittings, 22-Inch For best results, use only Rheem replacement parts for repairing your Rheem Water Heater Material: Aluminum, Shape: Round, Diameter - Bottom (in.): 22, Diameter - Top (in.): 23 Kits which contain this part: SP12941 Height (in.): 2-1/8, Drain Hole Size (in.): 1, PVC Drain Fitting: Glue-in for 1 in. pipe