A Cover Block is essentially a spacer that is used to lift the rebar matrix off the ground so that concrete may flow under the rebar.
Cover Blocks are used for the following reasons
Thickness : 20mm
Draft: 60mm to 37mm
Draft: 65mm to 38mm
Draft: 14mm to 38mm
Thickness : 20mm
Thickness : 24mm
Thickness : 24mm
Thickness : 30mm
Thickness : 30mm
Thickness : 30mm