The C52 and C53 Guardrail Receptacles are designed to facilitate placement of guardrail posts on the exterior formwork. The C52 receptacle bolts securely to the C54 Bridge Overhang Bracket Extender and accepts 2x4 guardrail posts. The C53 receptacle attaches to the flat 2x6 which is nailed to the channels of the overhang bracket and accepts 2x6 guardrail posts.