The Superior Pro-Shield Shower System contains all the pieces and accessories you need to fully waterproof and prepare a shower for tiling. Build your shower with boards, membranes, curbs and a shower pan to establish the base shape. Then complete with the finishing touches like drains and valve seals. The 5’ x 5" x 4.5" Superior Pro-Shield Full Foam Curb is a waterproofing edge that cordons off the edges of your shower base.