Montana Stone is a drycast block with a wetcast look that is produced on the company's Rabco III drycast machine. Its deep contours, variety of colors, and multiple face patterns combine to create a natural stone effect. Montana Stone blocks are 6x16x12 in., weigh 72 lbs. and utilize a rear lip to ensure proper placement. Natural Concrete Products. 402-560-0105. www.naturalconcreteproducts.com.