Swan SF04236MD.042 42-in L x 36-in W x 5.5-in H Solid Surface Shower Base, Gray Granite Reinforced solid surface means color and texture run all the way through and cannot wear away Single threshold shower floor Pre-installed Fit-Flo drain requires less time for floor installation Will not mold or mildew, no grout to clean Pebbled, slip-resistant surface Available in many colors to coordinate with Swanstone walls and vanity tops Limited lifetime warranty