Abstract: A shower base assembly, comprising a shower base having a length and a width; a drainage channel disposed in the shower base; a drain outlet disposed in the drainage channel; and a drain cover configured to cover the drainage channel, wherein the drainage channel comprises a first edge and a second edge defining a drainage channel length, the drainage channel comprises a third edge and a fourth edge defining a drainage channel width, and the drain outlet is disposed in the drainage channel off-center along the drainage channel length.

Abstract: A modular shelf system for a bath or shower wall, comprising one or more shelves and a panel, wherein the panel comprises a flange configured to be parallel planar with a bath or shower wall, the panel comprises a cavity configured to removably receive the one or more shelves, the panel cavity is configured to be recessed within the bath or shower wall, the one or more shelves are configured to be removably coupled to the panel cavity, and when the one or more shelves are removably coupled to the panel cavity, they are configured to resist being inadvertently pulled out of the cavity and inadvertently tilted.

Abstract: A shower or tub assembly comprising a shower base or bathtub having a floor comprising an upper surface and a lower surface; and a support structure coupled to the floor lower surface, wherein when the shower or tub is in use, the floor upper surface is exposed and configured for a person to sit or stand on, and the lower surface is at least partially concealed, the support structure comprises a plurality of ribs, the ribs being substantially perpendicular to the floor, and the plurality of ribs at least partially form a repeating hexagonal pattern or at least partially form a repeating triangular pattern.