Model 170-8A. Popular ceiling baffle features a die-formed frame with shal-low bevel and perforated screen. Separate loudspeaker mounting subplate (20-ga. CRS) provides extended "no leak" bass response. The design offers screw-mount installation with concealed loudspeaker mounting studs and accommodates standard 8" (203 mm) dia. loudspeakers. Unit is of two-piece CRS construction (18-ga. trim, 22-ga. perforated grille) with textured white epoxy finish.