Model allows upward sound dispersion and includes two 23 3 /4" (603mm) channel support rails and the necessary hardware for installation in T-Bar ceilings. Heavy-gauge CRS enclosure is acoustically treated with undercoating and 11 /2 lb./ft.3 density fiberglass to absorb the resonance associated with high-frequency sound transmission. Unit is finished in black epoxy.

Factory-mounted and wired 70.7V (T7) transformer is supplied with .5, 1, 2, and 5 Watt primary taps. Taps are externally accessible to facilitate power selection without dismantling the assembly.

Model enclosure offers a cubic content of 529 in3 (.087 m3 ) C10A, 8" Diameter loudspeaker and a 70.7V (T7) transformer. Loudspeaker mounting plate contains no perforated grille and thus positions the speaker cone as fully exposed.