Check the listing for details. Custom Building Products SimpleSet Quart Gray Pre-Mixed Thin-Set Mortar CTTSGQT. Color: Gray, Condition: New, Made in United States. Listed at 12.81 USD. A no-mix, no-mess alternative to traditional thin-set mortars spreads quickly and easily. Recommended to bond porcelain, stone, marble, granite and ceramic or porcelain tile up to 8" x 8". Can be used with tile with one side up to 15", but dry time significantly increases. For interior wall and floor installations. Use white SimpleSet when installing lighter-color stone and tile. Exceeds ANSI A136.1 Type I. Coverage: 40-44 sq. ft. per gallon using a 3/16" x 5/32" V-notch trowel for tile up to 6" x 6". 20-25 sq. ft. per gallon using 1/4" x 1/4" x 1/4" square notch trowel for tile up to 12" x 12". 14-17 sq. ft. per gallon using a 1/4" x 3/8" x 1/4" square notch trowel for tile over up to 16" x 16".