Caliber Stone is a flexible retaining wall product that allows your creativity to run wild. Whether you’re a seasoned builder or a DIY enthusiast, Caliber Stone’s basic design allows walls to be built fast and without the need for wall attachments or equipment. Caliber Stone enables you to confidently and stylishly remodel your outdoor environment by producing magnificent walls, planters, seats, and fire pits, as well as efficient kitchen kits and exquisite columns.