Our Prefabricated Countertops are available in Granite, Marble, Travertine, Q Premium Natural Quartz ,Venetian Marble and Porcelain Prefab. Standard sizes are 2CM • 112” x 26” x 2cm and 12MM 120” x26”x 12MM for Porcelain Prefab . Each size includes a matching 6” High Backsplash. The 2CM countertops have a 1-1/2” laminated flat edge on one long side and two short sides. The 12mm Porcelain Prefab countertop have 1 ¼ mitered edge on one long side and the two short sides.