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