A plastic Rebar Chair for concrete support is used to support the rebar mats or cages at the desired heights in order to achieve proper concrete coverage and maximize the benefit of reinforcing steel. Plastic Rebar Chair are made out of durable non-corroding high-density plastic which is both strong and light. Our rebar chair systems cannot change shape and will provide a uniform concrete cover. A plastic Rebar Chair for concrete support can be used in tilt-up and slab work. They are stable and economical. Its fastening system is strong and versatile.