Plastic rebar chair 25/40mm 50/65mm 75/90mm 85/100mm size weight(g) pcs/ctn ctns/plt plts/40' pcs/40' 25/40 22.5 500 12 44 264000 50/65 28 500 12 44 264000 75/90 34 500 12 40 240000 85/100 40 200 16 44 140800. Ideal for Slab on Ground construction Pod Slabs Swimming Pools Description This range of popular reo chairs are light weight and being stackable allow for ease of handling. These dual height reinforcement spacers are designed for ground floor slabs where support for steel is required without puncturing the polymer membrane. Manufactured from selected recycled plastics for superior performance and cleaning the environment. Baseplates The plastic sand tray provides most types of chairs with extra stability in the slab on ground construction. This product has a 200mm diameter, and locating pins to prevent movement of the chair. With carton then with pallet, or only with carton.