Labels:hakham | sky | window OCR: What Head of Wall Deflection Systems? A head of wall deflection system is means of attaching non load bearing walls to the adjacent assemblies (cold formed steel framing. red iron, concrete, etc.). 4 head of wall deflection system is comprised of light gauge metal framing and gypsum wallboard. If a fire-rated joint is required, some type of fire stopping materials will also be designed into the system.