CAMO BLOCK is a lightweight, heavy-duty alternative to concrete deck blocks. Gone are the days of taking multiple trips to the store-and breaking your back-to build a freestanding deck. Weighing only 2.16lbs but load-rated to support over 1800lbs, CAMO BLOCK is an easy-to-carry deck foundation that also nests together for easy transport.Whether you're building a freestanding deck, walkway, shed, or other exterior structure, the versatile CAMO BLOCK is the right foundation for the job. BLOCK accepts 4x4 or 6x6 wood posts and 2x4, 2x6, or 2x8 wood joists or 2 in. metal joists. Best of all, BLOCK is precision-crafted, eliminating the need to alter BLOCK to fit your project. That means installation is as easy as placing your BLOCKS, setting your joists or posts, and building.CAMO BLOCK was designed to hold up to the harshest environments and is even cold-weather approved to resist frost heave. BLOCK is infused with UV protectant so it won't chip, crack, or corrode under sun, rain, cold, snow, and ice, and it's made from a Polyolefin material that also resists mold growth. Additionally, BLOCK was engineered with vents and drains that keep water away from the joists and posts, protecting them from sitting in pooled water, which can deteriorate the life of the support.