Plastic spacers are used for protecting rebar from the concrete moisture to prevent rebar corrosion.
Different concrete spacers makes different protective layer, evaluated usually in mm.
Spacers from Baumak company are produced from polypropylene, which is a steady material for environment influence and different acidic and alkaine media.
Concrete spacer "Chair" 20/4-16 provides the protection of rebar from concrete 20 mm in vertical planes. Diameter of rebar can vary from 4 to 16 mm.
This type of concrete spacer is very solid, it is not changing its properties in any temperature. This allows to use less concrete spacers for m2 in comparison with other type concrete spacers.
Advantage of concrete spacers are its light weight, small size, easy mounting and low price.
*Price is for 1 bag which contains 1000 pcs