JBL MTC-300BB12 Backbox For 12-IN C300 100713682 Simple Setup and Tear DownSetup

Simple Setup and Tear DownSetup and tear down takes seconds

With multiple roller bearings

Specifications: Interior Length: 50

continuously variable opening

Dedicated AC adapter included (GPE248-120200-Z)

JBL MTC-300BB12 Backbox For 12-IN C300 100713682 Simple Setup and Tear DownSetupJBL MTC 300BB12 Backbox For 12 Inch C300 Features: 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. Specifications: External Volume: 3 cu ft, nominal Internal Volume: 2. 4 cu ft. Knockouts: 22. 1 mm (0. 87 in) diameter opening;