The Guardian Fall Protection Stacker Bracket Frame is the primary support mechanism for the Stacker Bracket System, and is where planks rest to form the walking surface. It is composed of durable and weather resistant powder-coated steel, and is ideal for eaves of up to 18 in in width. The Stacker Bracket System extends 17 in below the top plate, and allows guardrails to be installed 28 in away from the wall