Specification
Section 27 0528.33
DEVICE BOXES FOR COMMUNICATIONS SYSTEMS
27 0528.33 - 3
4) Fixed mount for 5 Square® device boxes permitting the box to be installed in any
orientation.
5) Adjustable mount for 4 square device boxes and 4 11/16 device boxes permitting
the boxes to adjust their mounting distance from other boxes.
d. Reversible: Bracket shall be capable of being mounted with the 5 Square® opening on the
left or right side.
e. Testing / Listing:
1) Intertek ETL Listed
2. Box Support Brackets shall be:
a. STEEL CITY 5 Square® Box Support Bracket for 16” stud spacing, H16S-82-3
1) Outside Dimensions:
a) 16 in (406 mm) Width
b) 5.3 in (134.62 mm) Height
c) 0.19 in (4.83 mm) Depth
2) Three box windows total:
a) 5 Square® boxes (two maximum)
b) 4 11/16 boxes (three maximum)
c) 4 square boxes (three maximum)
b. STEEL CITY 5 Square® Box Support Bracket for 24” stud spacing, H24S-82-4
1) Outside Dimensions:
a) 24 in (610 mm) Width
b) 5.3 in (134.62 mm) Height
c) 0.19 in (4.83 mm) Depth
2) Four box windows total:
a) 5 Square® boxes (two maximum)
b) 4 11/16 boxes (four maximum)
c) 4 square boxes (four maximum)
C. Extension Rings: Box covers, suitable to reduce front opening of box for faceplate mounting. Also
called “mud rings” or “plaster rings”.
1. All extension rings shall have the following characteristics:
a. Materials:
1) Steel, 0.0625 in (1.59 mm) thickness (minimum)
2) Galvanized zinc coating, 0.0005 in (0.013 mm) (minimum) thickness on both sides of
extension ring.
3) Outside Dimensions:
a) 5 in (127 mm) Width
b) 5 in (127 mm) Height
b. Construction:
1) Cleanly punched knockouts
2) Softened edges (no sharp edges)
3) Stamped/Drawn fabrication
c. Mounting/Attachment Features:
1) Attachable directly to Device Box or to Box Support Bracket
2) Centerline and mid-line markings for device box installation
3) 4 screw slots (2 straight and at least 2 angled), suitable to mount on screws that are
already in place.
4) At least 2 faceplate mounting tabs, with tapped holes (6-32) to receive faceplate
screws. For 4 Square Extension ring, the tapped holes shall be 8-32.
5) Precision screw-hole positioning for reliable device mounting within +/- 5
thousandths.
d. Reversible: Extension Rings shall be capable of being mounted in multiple orientations.
e. Testing / Listing:
1) Intertek ETL Listed
2. 5 Square® by 4 Square Extension Rings