MAPEI UltraFlex 2 50 lb White Powder Thinset Mortar Universal Joints Threshold must have a minimum Threshold must have a minimum flat width of 2 3 4 in 7 Warranty 7 year limited CA Residents: Prop 65 Warning(s) Yes Maximum PSI 120 Sub Brand N A Cordless Pneumatic Inlet Size in Inches 1 4 in Magazine Capacity 100 Jam Clearing Tool free Fastener Head Style Clip head Required Pressure (PSI) 70 ANSI Compliant No Pneumatic Yes pavers and most types of marble granite and natural stone Ideal for small format tiles with all sides 15 inches or less Higher polymer content provides better bonds with porcelain tile and plywood substrates and porcelain tile Use on floors and walls Use for most interior and exterior projects Smooth and creamy consistency for easy application