Best-in-Class Three Cubic Foot Back Box for 12 Models. Rectangular with extra-thick 16 gauge metal and heavy duty MDF reinforcement on top and side panels. Fits Control 321C, 321CT, 322C, 322CT & 321CS. 23.1" x 18.2" (20" Incl. Side Tabs) x 12.8" Deep. NOW UL LISTED. JBL Professional MTC-300BB12 is a 3 Cubic Foot Backbox for Control 300 Series 12-Inch Drivers which is compatible with two common mounting systems for installing the loudspeaker/baffle to the backbox. Features include a mounting platform for an optional high-power 70V/100V transformer, a dual mounting system for the baffle, knockouts on top and all four sides, and 1/2-inch thick MDF lining to eliminate resonances and provide extra bass response. Priced and packaged per pack; check product listing for pack quantity information.
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