• Rugged welded design does not fall apart during construction.
• Available from one to six gang configurations in both 2-1/2" and 3-1/2" depths.
• Rectangular shape fits square cuts in block.
• Large volume design allows for additional work room inside the box.
• Standard 1/2" and 3/4" concentric knockouts.
• Device ears inside the box prevent mortar from getting in the device holes.
• Steel voltage partition #971 fits all 2-1/2" or 3-1/2" depths.
• Standard wall plates can be used.
• Device ears are formed inside the box
• Rectangular shape neatly fits square cuts in concrete block, 3-3/4 in. x 5-19/32 in
• 47.8 cu. in. capacity
• UL listed

• Integral brackets securely hold box to concrete block from front and back in masonry block walls, even in irregular openings
• Supplied with twenty-four 1/2-3/4 in. concentric knockouts
• Quick and accurate positioning
• Break off front tabs
• Non-gangable
• 89.8 cu. in. capacity
• Acceptable for use in 2-hour fire rated walls
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wall stud telescoping box mounting bracket box mounting clip
Adjustable box support for suspended ceilings
accomodates heights up to 8-3/4"
Integral ruller stamping on items enables height and length adjustable without measuring
Ideal for installation of speaker cases,emergency light fixtures etc. in suspended ceilings
Static load capacity(25 lbs)
without dedicated dropwire 70lbs
If need assemble pls contact us when ordered
Open box mounting bracket
1)Open box support allows for adjustablility of box position between studs
2) Support most North American boxes and/or plaster rings 4" SQ 4-11/16SQ
5"SQ and multi-gang boxes
3) Fits up to 1-1/2" wide studs 16" &24"on center
4) Compatible with rapid ring & adjustable plaster rings
5) Field cut to adjust to non-standard stud spacings
6) Stamped markings at 1/2" 1/4"and 1" increments to allow the installer to easily locate the desited box position
7) You may contact us for pre-fab assemblies
8) Bracket accessories require no tools to install
9) Fllor stand ensures consistent box height and eliminates need to measure for proper install height.

wall stud telescoping box mounting bracket box mounting clip
Adjustable box support for suspended ceilings
accomodates heights up to 8-3/4"
Integral ruller stamping on items enables height and length adjustable without measuring
Ideal for installation of speaker cases,emergency light fixtures etc. in suspended ceilings
Static load capacity(25 lbs)
without dedicated dropwire 70lbs
If need assemble pls contact us when ordered
Open box mounting bracket
1)Open box support allows for adjustablility of box position between studs
2) Support most North American boxes and/or plaster rings 4" SQ 4-11/16SQ
5"SQ and multi-gang boxes
3) Fits up to 1-1/2" wide studs 16" &24"on center
4) Compatible with rapid ring & adjustable plaster rings
5) Field cut to adjust to non-standard stud spacings
6) Stamped markings at 1/2" 1/4"and 1" increments to allow the installer to easily locate the desited box position
7) You may contact us for pre-fab assemblies
8) Bracket accessories require no tools to install
9) Fllor stand ensures consistent box height and eliminates need to measure for proper install height.