JBL MTC-300BB12 Backbox For 12-Inch C300

• Extra-thick 16 gauge metal construction.
• Lined with 12 mm (1/2 inch) thick MDF to eliminate resonances and to provide extra bass response.
• Knockouts on top and all four sides.
• Dual mounting system for baffle.
• Mounting platform for an optional high-power 70V/100V transformer.

• External Volume: 3 cu ft, nominal
• Internal Volume: 2.4 cu ft.
• Knockouts: 22.1 mm (0.87 in) diameter opening; Five (5) locations: 1 on top panel; 1 on each side and end
• Height: 308 mm (12.1 in) above ceiling; 324 mm (12.6 in) total height
• Width: 587 mm (23.1 in)
• Depth: 461 mm (18.2 in) cabinet; 505 mm (19.9 in) including side tabs
• Ceiling Cut Out: 378 x 378 mm (14.9 x 14.9 in)