Shower curb kit provides you a shower tray made of EPS high-pressure foam board. Overall size 48 in 72 in (1219.2 mm 1828.8 mm). The drainage hole is set in the middle with a 4 in (10 cm) diameter for effective water running. The shower tray is equipped with a gray water-impermeable membrane with fluffy texture on the surface, convenient for mortar brushing. The tray forms a 5 inclination from four sides to the middle, which is convenient for drainage. The shower curb overlay includes a durable ABS flange and auxiliary drainage device (fit for 2 inch pipes) to ensure smooth water flowing. With a gravity automatic seal grate, pipes won't be blocked. In addition, we offer 2 shower curbs with the size of 48 in 4.5 in 6 in (1219.2 mm 114.3 mm 152.4 mm). Adopting XPS plastic extruded board, 2 shower curbs are easy to cut and can be adjusted according to the actual needs of the length. 2 rolls of HDPE material water-impermeable membrane are included in shower base kit. Small roll size 5 in 32.8 ft(12.7 cm 10 m). Large roll size 3.3 ft 32.8 ft(1 m 10 m). You are allowed to choose the membrane for different areas of the wall or floor. For your quick use, 4 inside corners and 2 outside corners of the membrane are provided without time-consuming cutting.