Use AtlasIED 195 Series protective enclosures for recessed or surface mounting of 840 Series clock/speaker baffles. The 195 Series has 12 knockouts (four on both top and bottom, two at each end). Enclosures are constructed of 20-gauge CRS and are heavily undercoated to prevent mechanical resonances. Units contain a compartment divider to separate high and low voltage wiring. Models for surface application include an (SM) prefix and are finished in textured white epoxy to match the clock/speaker baffle panel. Recessed enclosures are finished with an epoxy coating.