MULTISET 917 is the economical polymer-modified dry-set mortar designed for the bonding of all types of tiles. It may be used for either walls or floors for both interior and exterior applications where a liquid latex-modified mortar is recommended. MULTISET is a blend of Portland cement, sand and special dry latex additives that significantly improve bond strength and freeze-thaw stability — performance characteristics typically available only through the addition of liquid latex additives to dry-set mortar