11 Shower systems and components thereof, namely, shower trays, shower tray disks, shower curbs, waterproofing membranes, waterproofing membrane rolls, waterproofing membrane bands, inside corners, outside corners, pipe seals, and mixing valve seals; Shower drain grate assemblies and components thereof, namely, shower drain grates, construction plugs, grate trays, grate tray risers, and horizontal adjustment rings; Drain kit assemblies and components thereof, namely, flanges, bonding flanges, construction covers, bushings, PVC bushings, ABS bushings, o-rings, and rubber o-rings; Shower system accessories, namely, benches, niches, and ramps; and Shower and wet area components, namely, foam tile backerboard and shower floors