All polymer corrosion proof shelving constructed of advanced polymers and Type 304 stainless corners. Open grid or solid shelf mats easily lift off the shelf frames. Shelves and polymer posts offer a lifetime against rust and corrosion. Shelf mats, beams, and posts have built-in Microban product protection. Shelf has a rigid four-sided frame with center truss. Robust corner provides complete 360 degree capture of the wedge and post for added stability. Stationary units have maximum capacity of 2, 000 lbs. (907kg) evenly distributed. Mobile units (with stem casters) offer a maximum total unit load of 900 lbs. (408kg). Units assemble easily — shelves mount on four one-piece wedges along numbered, grooved posts and adjust on 1" (25mm) increments.