NEW from Arlington
Steel Octagonal Fan and Fixture Joist Mounting Boxes
Secure Mounting • For Joist Mounting in New Construction
Arlington’s steel octagonal boxes offer the fastest and most secure way to mount a fan or fixture to a joist. FBS415 and FBS420 mount to the underside of a joist while the ‘S’ series boxes mount on the side. These boxes ship ready to use with no loose parts to misplace! The box and bracket installation screws ship captive. They also include multiple knockouts, an installed mud cover, and NM cable connector.

Features and Benefits
• Combination Hex/Phillips head screws make for easy installation in new construction.
• FBS415 14.6 cu in • 1-1/2" deep. FBS420 20.0 cu in • 2" deep.
• UL/CSA Listed
Instalation Shots

Download the Specification Sheet
![]() French Spec Sheet |
View Our Online Catalog
![]() |
How to Buy
Contact an Arlington Sales Representative
Purchasing in Canada? Please click here to contact our Canadian Representatives.