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Fasteners and fixing systems

Box support fasteners

Not all electrical box supports are created equal. 

When it comes to rigid, easy to install electrical box supports, Eaton offers a wide variety of B-Lines series electrical boxes that help reduce installation complexity.

From floor-mount to wall-mount box supports, we offer a variety of options to mount just one to up to 4 or 5 boxes, and every design is rigid enough to withstand the rigors of drywall installation.

BBT-HF Telescoping bracket

The BBT-HF Telescoping bracket features is quick and easy to install.  Simply slide the bracket to the width required and snap both ends of the bracket to the stud and secure with screws.  

Plus, the BBA and BBA-4 box mounting brackets easily snaps onto the BBT-HF bracket and accepts 4”, 4-11/16” and 5” electrical box sizes.

BBT-WF Telescoping bracket for wide flange studs

The telescoping box mounting bracket, BBT-WF, is ideal for wide flange (structural style or wood) studs.  For use with structural style studs that are wider than 1-3/8''.

  • Includes Auto-ADA height feature
  • Works with 4", 4-11/16", and 5" electrical boxes

Explore the latest telescoping bracket accessory – BBT-TG ceiling bracket

BBT-16 Telescoping bracket for smaller spaces 

The BBT-16 telescoping box mounting bracket is designed for use with studs with 9-1/4” to 16-1/2” spacing.

Ceiling clips for BBT brackets 

The BBT-TG ceiling clips installs onto BBT-WF with two screws for installation into T-Grid ceilings.  Allows for easy box attachment using BBA or BBA-4 alignment bracket.

BBA series box mounting brackets

The BBA, BBA-2 and BBA-4 box mounting bracket easily snaps onto the BBT-HF and BBT-WF bracket and accepts 4”, 4-11/16” and 5” box sizes.  The BBA-MG box mounting bracket is designed for use with multi-gang boxes. To explore options, view the flyer.

TThe BBA series are also available as prefabricated assemblies.  For more information, visit Eaton.com/ruff-in

BB5-HF hands-free box support stud bracket

Save up to 15 seconds per cycle!

With a simple push, the new Hands Free Stud Mounting Bracket holds itself onto the stud until secured with a screw.   Innovative features include Marty Mouse ears to retain the box when plaster ring is removed, and Rabbit Ears to attach a plaster ring for data devices without using a box.

  • Accepts 4”, 4-11/16” and 5” box sizes
  • Built-in, snap off back support extension for studs from 2.5” to 6” studs 

Simplify your install with the completely adjustable telescoping box bracket

The telescoping box bracket fits a range of stud spacings that mounts with just two screws, then snap on the tool-less box mounting clip to quickly attach your box.

Ask for the B-Line series BB2-16T or BB2-24T bracket and the BB2TSC mounting clip on your next order.

 

Specifications
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Electrical box support fasteners

Eaton offers a wide range of Eaton B-Line series electrical box support fastener solutions.  Below are many of the options.  For the full offering and additional specifications, view or download the B-Line series fastener catalog.

Hands free stud mount box support bracket

  • Simple push bracket holds itself to stud, leaving hands free to secure with a screw
  • Two screws shown for stud mounting, but only one required for cULus listing
  • Designed to mount two boxes at same height on either side of the stud
  • Built-in back support accessory for job-site flexibility
  • Bracket accepts 4", 4-11⁄16", and 5" boxes
  • Bracket extender easily snaps off bracket to snap into place as a back support for up to 6" stud depths
  • Marty Mouse ears retain box when plaster ring is removed
  • Rabbit Ears and mud ring allow data communication devices, such as card readers, to be attached to the bracket without the use of a box
  • U.S. and Canada model numbers:
    • BB5-HF for both U.S. and Canada
    • BB5-HFCAN for Canada only
BB5-HF stud mount bracket
BB5-HF stud mount bracket

BB2-16T and BB2-24T telescoping box mounting brackets

  • Completely adjustable, fits range of stud spacings
  • Mounts boxes 1-1/2”, 2-1/8”, 2-1/2” and 2-13/16” deep
  • Increased rigidity with center groove design
  • Only two screws required to mount for 1-1/2” and 2-1/8” box depths
  • Pre-punched screw holes provide easy box installation
  • Bar marked with scale for stud spacing
  • Finish: pre-galvanized
  • Part numbers and descriptions:
    • BB2-16T for metal stud spacing of 11” to 18”
    • BB2-24T for metal stud spacing of 15-1/2” to 26”
BB2-24 telescoping box mounting bracket

 BB4 series box support brackets

  • Improved far-side support stands up during drywall installation and out-performs competitors’ brackets
  • Supports 4” or 4-11/16” square boxes
  • Brackets can be piggy-backed in series
  • Finish: pre-galvanized
  • Part numbers and descriptions:
    • BB4-23 for 3-5/8” and 2-1/2” metal stud sizes, single box
    • BB4-4 for 4”, 3-5/8” and 2-1/2”, metal stud sizes, single box 
    • BB4-6 for 6”, 5-1/2”, 3-5/8” and 2-1/2” metal stud sizes, single box
    • BB4-23D for 3-5/8”, 2-1/2” metal stud sizes two-gang boxes
    • BB4-4D for 4”, 3-5/8” and 2-1/2”, metal stud sizes, two-gang boxes 
    • BB4-6D for 6”, 5-1/2”, 3-5/8” and 2-1/2” metal stud sizes, two-gang boxes
BB4-6 box support bracket

BB70 and BB70E box support bracket

  • Interlocking wrap-around design provides extra rigidity
  • Supports most standard 1-gang and 2-gang U.S. and Canadian boxed and/or plaster rings 4” sq., 4-11/16” sq. and 5” sq. on either side of stud
  • Adjustable for varying stud depths, 2-1/2” to 6”
  • Compatible with 1-gang and 2-gang Rapid Ring™ and adjustable plaster rings
  • Integral mounting tabs for attaching plaster rings
  • Multiple brackets can be ganged together
  • Pre-fabricated box assemblies available (contact factory)
  • Finish: pre-galvanized
  • Part numbers and descriptions:
    • BB70 for 2-1/2” to 4” stud depth
    • BB70E for 5-1/2” to 6” stud depth
BB70 box support bracket

Double-sided box support bracket with Marty Mouse ears

  • Double-sided box support, designed for pre-fabrication
  • Unit can be installed on either side of stud without repositioning box or devices
  • Patented Marty Mouse ears feature an innovative keyhole pattern to secure outlet box to bracket with or without the plaster ring
  • Wider box opening accommodates 1-gang (B1AJ) or 2-gang (B2AJ) adjustable plaster rings
  • Enhanced far-side support stands up during drywall installation and out-performs competitors’ brackets
  • Finish: pre-galvanized
  • Part numbers and descriptions:
    • BB73 for 3-5/8” and 2-1/2” stud sizes
    • BB74 for 4”, 3-5/8” and 2-1/2” stud sizes
    • BB76 for 6”, 5-1/2”, 3-5/8” and 2-1/2” stud sizes
BB73 double-sided box bracket

BB2TSC box mounting clip

  • Allows for pre-fabrication of the electrical box prior to installing the box onto the bracket
  • Not tools needed; installs by snapping onto the bracket
  • Requires no hardware to secure
  • Pre-fabricated box assemblies available upon request
BB2TSC box mounting clip

BB7 series open box mounting bracket

  • Allows for adjustability of box position between studs
  • Supports most U.S. and Canadian boxed and-or plaster rings 4” sq., 4-11/16” sq., 5” sq. and multi-gang boxes
  • Fits up to 1-1/2”-wide studs 16” to 24” on center
  • Compatible with Rapid Ring™ and adjustable plaster rings
  • Can be field cut to adjust to non-standard stud spacings
  • Stamped markings at ¼”, ½” and 1” increments to allow installer to locate the desired box position easily
  • Part numbers and descriptions:
    • BB7-16 for 16” stud spacing
    • BB7-24 for 24” stud spacing
    • BB7AP, alignment plate accessory
BB7 series open box mount bracket

BB8 series box mounting brackets

  • Increased strength and rigidity to help withstand the stress of drywall installation
  • Supports most U.S. and Canadian boxed and plaster rings 4” sq. and 4-11/16” sq.
  • Compatible with 1-gang and 2-gang Rapid Ring and adjustable plaster rings
  • Pre-fabricated box assemblies available (contact factory)
  • Finish: pre-galvanized
  • Part numbers and description
    • BB8-16 for 16” stud spacing
    • BB8-24 for 24” stud spacing
BB8 series box mounting bracket

BBFS-18 box mounting bracket floor stand accessory

  • Require no tools to install
  • Helps ensure consistent box height and eliminated need to measure for proper install height
  • Can be used with BB7 series and BB8 series brackets
  • Finish: pre-galvanized
box-mounting-bracket-accessory-bbfs-18.jpg
BBFS-18 box mounting floor stand accessory

BBF series floor mount box supports

  • One of the most rigid floor mount box supports in industry
  • Far-side support accommodates 6”, 5-1/2”, 3-5/8” and 2-1/2” stud depths
  • If desired, fold-out tab built-in to attach floor stand to stud
  • Integral “wings” provide rigid support when floor stand is mounted between studs
  • Optional cable containment clip securely attaches to floor stand without hardware
  • Patented Marty Mouse ears enable boxes to be secured in place with or without plaster rings
BBF18 floor mount box supports

BB-18 traditional floor-mount box support

  • Alternative solution: BBF series
  • Provides support for electrical box from floor track to concrete forms
  • 18” length with bread-away feature for 12” or 16” box mounting
  • Finish: pre-galvanized
BB-18 floor mount box support

Uni-Mount box support and cover plate mounting brackets

  • Helps provide secure support for 4” sq. boxes
  • Features built-in plaster ring
  • Rigid bracket design eliminates need for far-side support
  • Enlarged viewing hole makes it easier to find mark lines on the stud
  • Design to gang multiple boxes, and works with BB423 bracket to mount boxed on both sides of stud
  • Finish: pre-galvanized
  • Part numbers and descriptions:
    • BB40-08 for single gang, 1/2” raise
    • BB40-10 for single gang, 5/8” raise
    • BB40-12 for single gang, ¾” raise
    • BB45-08 for double gang, 1/2” raise
    • BB45-10 for double gang, 5/8” raise
    • BB45-12 for double gang, ¾” raise
BB40-10 Uni-Mount box support and cover plate mounting bracket
BB40-10 Uni-Mount single cage, box support and cover plate mounting bracket

BB15 single gang stud bracket cover plate mounting bracket

  • Provides attachment base for low voltage outlets
  • Replaces electrical box in Class 2 low voltage installations
  • Can be piggy-backed
  • For 1/2” and 5/8” drywall applications
  • Finish: pre-galvanized
BB15 single gang bracket cover plate mounting bracket

Electrical box support accessories, clips, retainers and stabilizers

BB1 electrical box support clip

  • Attach electrical box using support clip and screws to metal studs

 

 

 

BB9 electrical box to stud fastener

  • Attaches to electrical boxes (requiring plaster rings) to most metal studs
  • Box mounts flush to back of drywall
  • Easily installed with hammer

BB32 box retainer leveler

  • Adds rigidity to devices in over sized wall openings
  • Holds wiring device firmly in drywall
  • Can be used with switches, receptacles, GFCIs and decorator devices
  • Ideal for positioning devices in pre-fabricated installations
  • Finish: pre-galvanized

 BB12 and BB12-6 adjustable box stabilizers

  • Provides far-side support for electrical boxes in 2-1/2” through 6” studs
  • Cutouts facilitate banding to provide precise installation with greater stability
  • Easily snaps onto box side and plaster ring secured in place
  • Part numbers and descriptions:
    • BB12 for metal stud sizes 2-1/2” through 4”
    • BB12-6 for metal stud size 6”

BF1 series box stabilizers

  • Provides far-side support for electrical boxes
  • Alternative option is BB12
  • Part numbers and descriptions:
    • BF1-40 for 2-1/2” metal stud sizes
    • BF1-56 for 3-1/2” metal stud sizes
    • BF1-64 for 4” metal stud sizes
    • BF1-96 for 6” metal stud sizes
BB12 adjustable box stabilizer

BB2TPC and BB2TCT series pipe / conduit clamp

  • Clamps snap onto telescoping box mounting bracket, no tools required
  • Supports pipe / conduit between wall studs
  • Copper pipe insulator sleeves available to help protect different metals
  • Part numbers and descriptions:
    • Clamps
      • BB2TPC-038 for 3/8" size
      • BB2TPC-050 for 1/2" size
      • BB2TPC-075 for 3/4" size
      • BB2TPC-100 for 1" size
    • Cooper pipe insulator
      • BB2TCT-050 for 1/2" size
      • BB2TCT-075 for 3/4" size
      • BB2TCT-100 for 1" size 
BB2TPC pipe / conduit clamp
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