Organize your A/V wires behind your display with the black Chief PAC525F-G In-Wall Storage Box with Flange It creates a recessed space in the wall for routing excess cables and for attaching surge protectors and power conditioners. The storage box is TAA-compliant to meet the needs of U.S. government projects and includes a flange for drywall mounting capability. The In-Wall Storage Box is compatible with the Chief PST, PRO, PLP, MSR, MTR, MWH, MWR, PWR, PNR, PDR, Thinstall, and FUSION wall mounts.