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JBL Pre-Install In Ceiling For Pre-Install Backbox

Product Code JBMTC-81TB8
Manufacturer JBL

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Pre-Install In-Ceiling Tile Bridge for Pre-Install Backbox

The MTC-81TB8 tile bridge is designed for use in applications requiring pre-installed backcans in suspended ceiling applications and is compatible with ceiling speakers having a 286 mm (11.25 in) mounting circle diameter, such as the JBL 8138 ceiling loudspeaker, and the JBL MTC-81BB8 pre-install backbox.




Fits 8138 speaker and MTC-81BB8 backbox

Load-bearing bridge eliminates ceiling tile sag by distributing weight to the ceiling’s support system

Rust-resistant 19-Gauge (1 mm thick) steel construction and e-coated finish ensures long service life.

Fits 610 mm (24 in) and 600 mm (23.6 in) tile grids




Material 19 gauge (1.0 mm thickness) steel, finished in black polymer e-coating for a high level of rust resistance.

Attachment Points 4 clip-nuts (ie, speed-clips, tinnerman clips) fit 4 mm tapping screws attaching speaker to tile bridge.

Thru-Holes 4 thru-holes on 286 mm (11.25 in) mounting circle for attaching tile bridge 

to backcan

Dimensions (L x D) 600 mm (23.6 in) length x 359 mm (14 in) width

Net Weight (ea) 0.9 kg (2.0 lbs)

Shipping Weight (ea) 1.3 kg (2.7 lbs)

Associated Models 8138 200 mm (8 in) ceiling speaker

MTC-81BB8 backbox

Equipment available to buy from this site is for professional use only. Please note in certain countries some products listed may not be available from A.C. Entertainment Technologies Ltd.

E&OE. Information is subject to change without notice. The rights and ownership of all trademarks are recognised.


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