Everbilt Watershield Shower 48 in. x 4.5 in. x 3 in. XPS Waterproof Shower Curb
The waterproof curb is prefabricated so you only have to ensure the corners are sealed before you tile. If a shorter curb is required, simply cut this curb down with a sharp razor blade knife. 48" prefabricated waterproof curb.