Custom Building Products ProLite 30 lb. Gray Rapid Setting Tile and Stone Mortar (35 Bags / Pallet)Fast curing Grout in 3 hours, open for traffic in 4 hours High bond strength Non slump for floors, sag and slip resistant for walls Lightweight 30 lbs. covers the same area as 50 lbs. of traditional mortar ExceedsANSIA118. 4andA118. 11 without the need for additives Formulated with recycled material and contributestoLEEDcertification California residents Features Flooring Type Cement,Ceramic,Glass,Porcelain,Stone,Tile Location