Description
Grate-Lock Interlocking Plank Safety Grating provides an easy-to-install, economical safety grating solution. Its interlocking side channels distribute loads to adjacent planks, enabling longer spans with reduced structural support. This efficient load distribution allows you to specify lighter gauge steel, delivering substantial material savings. Pre-punched holes in the side channels let installers bolt planks together for enhanced performance.
Key benefits include:
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Interlocking side channels
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Increased load performance
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Traction grip or smooth walking surface options
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Easy fabrication and installation
Grate-Lock Interlocking Plank Safety Grating Details

Widths & Depths
Grate-Lock planks come in three convenient widths and four depths to support a wide range of load requirements.
Available plank widths:
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6″ wide
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9″ wide
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12″ wide
Available channel depths:
1‑1/2″, 2‑1/2″, 3″, and 4″.
We stock 24′ lengths for efficient layout and minimal waste when cutting to size.
*Note: 1‑1/2″ channel depth is only available in 12′ length.

Plank Options
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MM – Male‑Male
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FF – Female‑Female
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FM – Female‑Male
Materials
Grate-Lock Interlocking Planks are available in:
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Pre‑galvanized steel, ASTM A924 G90, 14, 16 & 18 gauge
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HRPO uncoated steel, ASTM A1011, 14, 16 & 18 gauge
How to Order Grate-Lock
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Additional Grate-Lock ProductsBeyond standard planks, we offer Grate-Lock stair treads with pre‑punched end plates, fabricated to your exact dimensions. Various fasteners are also available. See the Related Products section below for further details.
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Grate-Lock Sizes & Options and Load Tables
Clamp / Clip Grate-Lock Fasteners
| Grate-Lock Hold Down Clamp Part No. RTM‑SW Material: Pre‑galvanized steel Part includes: 1 Hold Down Clamp Hardware not included: 5/16″–18 hex head cap screw, 5/16″ flat washer, 5/16″-18 hex nut |
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Grate-Lock Hold Down Clip
Material: Pre‑galvanized steel |
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