American Olean Unglazed Porcelain Mosaics 12 Pack Black 12 in x 24 in Unglazed Porcelain Uniform Squares Mosaic Floor and Wall Tile Treads risers Stairs Architectural style that's practically priced Architectural style that's practically priced 625 Manufacturer Warranty 3 Year Limited Warranty 79 PEI Rating Not rated Breaking Strength in Pounds 251 499 Frost Resistant Yes Water Absorption Impervious Shade Variation V3 (moderate variation) Manufacturer Color Finish Black Warranty 1 year limited Sold As Carton Weight (lbs 42 Sample Item Number N A For Use with Bathroom Floors Yes Can be Used as Accent Tile Yes Suggested Grout Line Size 1 8 For Use with Fireplace Exteriors Yes For Use with Garage Walls Yes For Use with Kitchen Backsplashes Yes For Use with Patios Yes For Use with Shower Floors Yes Type Floor and wall For Use with Shower Walls Yes Width Measurement 12 in Common Measurement (W x L) 12 in x 24 in