Transolid 31.5-in W x 60-in L Center Black Single Threshold Rectangle Shower Pan Base with 1-in H Threshold

31.5-in W x 60-in L Center Black Single Threshold Rectangle Shower Pan Base with 1-in H Threshold. Zero threshold shower floor creates a virtually flush entry to the shower with beautiful slate non-slip finish. Customizable shower base can accommodate a single, double or triple threshold installation. Trimmable base up to 4-in in width from the side opposite drain or up to 2-in from depth and provided with a 10 year limited warranty for residential use/3 Year for commercial use. Transtone is a sheet molded compound material constructed of many solid layers of a glass reinforced polymer resin. There are many benefits to using the same solid material all the way throughout the base, including, protection against scratches, nicks and gouges, 4 times the impact resistance of other bases and 2.5 times the temperature resistance. A substantial 1.3-in tiling flange ensures no water will sneak in the cracks between your shower base and walls. The back side of the base employs structural ribbing to easily achieve a perfectly level base while maintaining superb strength. A slim, modern stainless steel drain creates a stylish design. Actual threshold measurement is 1-in but when installed, the difference against flooring is approximately 1/8-in