ProLite offers high bond strength in a lightweight formula with excellent handling characteristics for a wide variety of floor and wall tile installations. Excellent for setting large format tile (LFT), heavy tile or stone, ProLite will not sag or slip on walls and offers non-slump performance for floor installations. Capable of thin-set or medium bed application up to 3/4" (19 mm) thick on horizontal surfaces after beatin. For interior and exterior installations. A 30 lb. (13.6 kg) bag covers the same area as a 50 lb. (22.68 kg) bag of traditional mortar. Formulated with post-consumer recycled material, it contributes to LEED certification. Exceeds ANSI A118.4TE, A118.15TE and A118.11 without the need for additives.