Pre-Mixed Ceramic Tile Thin Set Mortar Gray, No-Mix, No-Mess, Quickly & Easily Spreads. Recommended for porcelain, stone, marble, granite, and ceramic tile. Tiles up to 8" x 8", or one side up to 15" with extended dry time. Interior wall & floor installations. Exceeds ANSI A136.1 Type I. V-Notch Trowel 3/16" x 5/32" ? 140 ft? to 154 ft? coverage. Square-Notch Trowel 1/4-In x 1/4-In x 1/4-In ? 70 ft? to 87.5 ft? coverage. Square-Notch Trowel 1/4-In x 3/4-In x 1/4-In ? 49 ft? to 59.5 ft? coverage. Coverage does not include backbuttering tiles.