Anodized aluminum 4 hole horizontal inside corner gusset fastening method connects two extrusion profiles together at a 90-degree connection. This 4 hole horizontal inside corner gusset doesn't require any machining and engages the 2-degree lock feature. For tightening assembly hardware see Recommended Fasteners.

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Recommended Fasteners

MOUNT TO T-SLOT EXTRUSION

ITEM # 651171 (Qty 4) 1/4-20 x 1/2″ BHSCS & Economy T-Nut