JBL MTC-81BB8

The MTC-81BB8 is a pre-install in-ceiling backcan, a JBL installation accessory. Fits 8138 speaker and MTC-81TB8. Extra-large 7.4 liter (0.26 cu ft).

It measures 178 mm (7 in) height x 300 mm (11.75 in) width and depth. Net weight is 1.1 kg (2.5 lbs). Volume allows for extra bass.

Type	Pre-Install In-Ceiling Backcan
Internal Volume	7.4 liters (0.26 cu ft)
Knockouts	22 mm (0.87 in) diameter opening
Five (5) locations	4 on side of can1 on top of panel of can
Suspension Tabs	2 flexible perforated mounting straps, one on each side.
Attachment Points	4 clip-nuts on 286 mm (11.25 in) mounting circle fix M4 tapping screws for attaching tile bridge to backcan, plus 4 thru holes providing clearance for screws from speaker to attach to tile bridge (see assembly drawing).
Material	16 gauge (1.3 mm thick) steel, finished in black polymer E-coating for a high level of rust resistance.
Dimensions (H x W x D)	178 mm (7 in) height x 300 mm (11.75 in) width and depth
Net Weight (each)	1.1 kg (2.5 lbs)