Custom MGMM50 Marble Granite & Travertine Premium Medium Bed Mortar, 50 LbA premium quality, polymer modified mortar for small to large format natural stone, ceramic or porcelain tile 15" x 15" (38 x 38 cm) or larger, clay pavers or other thin or medium bed applications. With a non slumping formula that eliminates lippage and minimizes leveling requirement, this mortar can be applied for horizontal applications as thick as 3 4" (19 mm) or for thin bed applications to 1 4" (6 mm). 50 lb White Supports stone for flat, even