Product code: R15; R20; R25; R30; R35; R40; R45; R50; R60; R70; R75; R80; R90; R100; R150
Contact Konsa for pricing and availability. Specifications are confirmed during enquiry.
Konsa rebar chair spacers support horizontal reinforcement in suspended slabs, beams and floor slabs while maintaining the specified concrete cover. The concave seat accommodates rebar from 6 mm to 40 mm. Select the required concrete cover from the size table, including a 50 mm cover option as product code R50. Sizes from 60 mm to 100 mm have a wider base for improved stability on softer supporting surfaces. Typical usage is approximately 2–4 spacers per square metre, subject to the reinforcement layout and project requirements.
Related products: Heavy-Duty Plastic Chair Spacer, Heavy-Duty Plastic Combination Chair Spacer, Wheel Spacer / Circular Spacer, and the Rebar and Reinforcing Spacers category.
Need help selecting the correct spacer size and concrete cover? A 50 mm concrete cover option is available as product code R50 on this page. For a heavy-duty plastic chair alternative with a 50 mm cover, see product code H50 on the linked heavy-duty plastic chair spacer page.
| Product Code | Concrete Coverage (mm) | Diameter (mm) |
|---|---|---|
| R15 | 15 | 6-40 |
| R20 | 20 | 6-40 |
| R25 | 25 | 6-40 |
| R30 | 30 | 6-40 |
| R35 | 35 | 6-40 |
| R40 | 40 | 6-40 |
| R45 | 45 | 6-40 |
| R50 | 50 | 6-40 |
| R60 | 60 | 6-40 |
| R70 | 70 | 6-40 |
| R75 | 75 | 6-40 |
| R80 | 80 | 6-40 |
| R90 | 90 | 6-40 |
| R100 | 100 | 6-40 |
| R150 | 150 | 6-40 |
Sizes and codes extracted from the legacy product table.
Code: CR30
Concrete chair spacers — also called concrete cover blocks — provide stable support for reinforcement while maintaining the required concrete cover. Manufactured from 32 MPa concrete and supplied with blackened wire ties, the spacers are water-cured for 15 days and dry-cured for a further six days to develop their intended strength. Available cover sizes include CR30, CR40 and CR50 as listed in the product specification table.
Code: H25
Heavy-duty plastic chair spacers support horizontal reinforcement in slabs and precast concrete applications. Their small contact area helps minimise the visible footprint against the formwork, while the concave seat accommodates rebar from 6 mm to 50 mm. Cover heights range from 25 mm to 80 mm, including H50 (50 mm). Spacers can be supplied with galvanised binding-wire ties by adding “W” to the product code, and custom sizes are available subject to manufacturing requirements.
Code: WS36
Rebar wheel spacers — also called circular spacers — are plastic clip-on supports that maintain consistent concrete cover around vertical reinforcement. The circular design provides support through 360 degrees, making these spacers suitable for columns, walls and beams. Multiple models are available for different rebar diameters and cover requirements; select the correct product code from the specification table for the reinforcement used on the project.
Code: C20
Heavy-duty combination chair spacers provide several cover heights from a single spacer, simplifying stock selection across slabs, walls, columns and precast concrete work. The compact formwork contact area and support for rebar from 6 mm to 40 mm make them a practical alternative to fibre-cement spacers. They can be supplied with or without galvanised binding-wire ties for faster placement and secure positioning.