The Crosslock CLB-40 — also known as a self locking PVC cover block for column — is engineered to deliver accurate spacing, secure positioning, and superior durability in reinforced concrete column construction. Designed to meet Indian and international standards, it ensures your reinforcement remains precisely in place during pouring, resulting in stronger, more reliable structures.
Key Features
- Accurate 40 mm Concrete Cover – Maintains exact cover between rebar and shuttering in RCC columns.
- Self-Locking Design – Snaps securely at the junction of ring and main bar for tool-free installation.
- Optimized Concrete Flow – Hollow body allows smooth concrete circulation for a uniform finish.
- Enhanced Aesthetics – Bottom ribs prevent visibility after casting, giving clean column faces.
- Standards Compliant – Manufactured as per IS 456 and BS 7973-1:2001 specifications.
- Versatile Fit – Compatible with rings of two 8 mm bars and main bars up to 25 mm diameter.
How to Use
Install before Shuttering- Crosslock CLB-40 needs to be installed before shuttering.
Position the Spacer – Place the Crosslock CLB-40 at the intersection of the ring and main bar. Use one or two pieces on each side of the column, depending on size.
Self-Locking Fit – Spacer locks automatically onto the top bar for a secure hold. Then do the shuttering.
Benefits at a Glance
✔ Faster installation with no tying required
✔ Maintains structural integrity during concrete pouring
✔ Long-lasting construction
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