The Box-Lok’s special configuration tightly locks the inner and outer cages into an integral unit of reinforcement, and it spaces both cages from the form surfaces.
Key Benefits
- Product is made from US steel and is US-made meeting BABA requirements.
- Tangle Free – the special TangleFree “spacer-on-a-stick” packaging technique allows the Box-Lok to be removed from the carton tangle free and ready for installation.
- Specially designed to space double cage reinforcement in box culverts
- Unique design twist-locks to both the inner and outer cage to dependably space each cage from both form surfaces
- Easy, no weld installation
- Heavy, spring steel construction and twist lock applicator for dependable, stay-on performance
- Additional sizes and Galvanized, Double Mat, and Galvanized Double Mat available upon request. Contact your sales rep.
To request a quote online, find your products in the table below, enter your quantities and click “Add to Quote” for each item you want quoted. When finished, click the “View cart” link to complete and submit your request. If you are ready to order, use the same form and include your P.O. (if applicable) and any shipping or special instructions in the comments field.

Key Benefits
• Product is made from US steel and is US-made meeting BABA requirements.
• Tangle Free — the special TangleFree “spacer-on-a-stick” packaging technique allows the Box-Lok to be removed from the carton tangle free and ready for installation.
• Unique design twist-locks to both the inner and outer cage to dependably space each cage from both form surfaces.
• Easy, no weld installation.
NEW! XL Box-Lok Weldless Double Cage Box Spacers
The XL Box-Lok is designed specifically for use on larger wire diameters, .375 up to .535 (or #6 Rebar), spacing double cage reinforcement in box culverts. NOTE: Our regular Box-Lok Weldless Double Cage Box Spacer is recommended for up to .375 diameter.
• Heavy, spring steel construction and twist lock applicator for dependable, stay-on performance.
• 1″, 1.25″, 1.5″ or 2″ Cover size options.
• Galvanized also available upon request.
• The XL Box-Lok can also be ordered in a Flat design for use with multiple wires for double mat situations.
• All XL Box-Loks are made to order at this time. Contact your sales rep. for a quote and lead time.