Rheem RXGY-ZK - Zero Clearance Downflow Conversion Kit Ten (10) - Screw (#8 x 1/2 in.) (63-24368-03) Two (2) - Pipe Collar Gasket Assembly (68-103580-03) One (1) - Drain Hose (Hose G - 1/2 in.) (79-104393-04) One (1) - Air Intake Pipe (68-104074-01) One (1) - Flue Pipe Assembly w/O-Ring (68-104193-01)