MAPEI UltraFlex 2 50 lb White Powder Thinset Mortar Sliding Tub Door aquariums and fish hatcheries Bypass Shower Doors aquariums and fish hatcheries Quick release miter lock provides easy access to make quick angle adjustments Use Over Exterior Grade Plywood Yes (no additive required) Use Over Concrete Yes Warranty 1 year limited Series Name UltraFlex 2 Unit of Measure Pound(s) Unit of Measure Quantity 50 Rapid Setting No Color Finish Family White Freeze Resistant Post Installation Yes For Use with Garage Walls Yes Product Type Powder UNSPSC 30111500 For Use with Shower Walls Yes For Use with Vinyl Floors No For Use with Garage Floors Yes For Use with Bathroom Walls Yes CA Residents: Prop 65 Warning(s) Yes Use Over Cement Backer Board Yes For Use with Kitchen Counters Yes Use Location Outdoor Type Thinset mortar For Use with Shower Floors Yes Unmodified No For Use with Kitchen Backsplashes Yes For Use with Bathroom Floors Yes Required Additional Components Water For Use with Pools No For Use with Patios Yes For Use with Fireplace Exteriors No Tile Size No sides greater than 15 in pavers and most types of marble