Amtico Australian Sandstone 12 x 18 Australian Sandstone: 6.27 S/FT, covers 45.000 per S/FT, contains 30.000 per Box, measures 18.000 Inch long, 12.000 MM wide, 2.500 Inch thick, weighs 30.000 lbs, composed of Vinyl, has a Squares design, Smooth surface type, Beveled edge type, Square end type, has a 15 year warranty