Selection Guide

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Switch boxes and accessories
Steel City® super deep 4" square wall boxes and 5'' square box
521911234RD
521911234
521911234CVRD
521911234CV
82181-1234-RD
12 STEEL CITY® METALLIC BOXES & COVERS
Features and benefits:
• Increased capacity accommodates large
devices in commercial and industrial
applications, such as fire alarm systems
• Red-painted version available for quick and easy
identification of life safety electrical systems
• Available with or without integrally mounted
support bracket
5" Square boxes
• Offer more than double the cubic-inch capacity
of a standard 4 in. - square deep box, making it
faster and easier to route wiring and make
terminations in the box. Save labor turn a two-
man job into a one-man job by storing the slack
cable loop in the box for easy access by a single
technician when terminating communications
cables. The extra room in the 5 SQUARE box
dramatically reduces the likelihood of ground
faults and short circuits when installing large
fire alarm devices.
Cat. No. Description Ears Brackets Each side KO Each end KO Bottom KO
Capacity
(cu. in.)
Std.
Ctn.
 

 – – 

" &

" combo 

" &

" combo 

" &

" combo  
 


with side mounting bracket – CV 

" &

" combo 

" &

" combo 

" &

" combo  
 

 – – 

" &

" combo 

" &

" combo 

" &

" combo  
 


with side mounting bracket – CV 

" &

" combo 

" &

" combo 

" &

" combo  
 


Fire signal red box – – 

" &

" combo 

" &

" combo 

" &

" combo  
—
