Abstract: A washing machine outlet box includes a bottom wall having a first drain port for a washing machine hose and a second drain port for a condensate line. Communicating with both drain ports is a common tailpiece integral with the bottom wall. The common tailpiece includes an outlet for connection to a drain pipe and wall sections defining a first passageway from the first drain port to the outlet and a second passageway from the second drain port to the outlet. This allows both drain ports to be connected to the drain pipe with only one solvent weld between the tailpiece and drain pipe.