Pass and Seymour Specialty Box

Shallow box with wings for thick/firewall ceilings, rotating dual support. 

Direct mount to joist.
UL listed for fan and fixture support.
Peel-off tape for ''hands-free'' installation.
Maximum weight ratings (slides and braces)
Broadest line available, from shallow to deep boxes.
Ground screw pre-installed.
Supplied with hardware.
Boxes include top knockouts.