Abstract: A closet carrier assembly has a carrier body assembly having at least one inlet for receiving waste and at least one outlet for communicating waste to a waste plumbing. The at least one inlet has internal threads and an outward facing surface substantially orthogonal to a longitudinal axis of the inlet. A tubular coupling is adapted to extend between the carrier body and the water closet. The tubular coupling has external threads thereon that threadingly engage the internal threads of the carrier body assembly and a flange member thereon that extends orthogonally to a longitudinal axis of the tubular coupling and resides adjacent the outward facing surface of the carrier body assembly. A deformable seal is compressed between the outward facing surface of the carrier body assembly and the flange member of the tubular coupling to form a water tight seal between the carrier body assembly and the tubular coupling.