The Guardian Fall Protection guardrail receiver is compatible with the guardian universal guardrail post (61133, 61135, 61136), and allows for the installation of guardrail systems flush against outside walls. It may be installed in both wood and concrete substrates, and is composed of powder-coated steel for superior durability and weather resistance. The guardrail receiver is reusable for multiple installations, although new fasteners must be used for each new installation application.