BL CSS-BB4x6 4" Backcan for CSS8004 Speaker

The JBL CSS‑BB4x6 is a pack of six 4‑inch backcans designed for use with JBL Commercial Series ceiling speakers, specifically the CSS‑8004 model. These backcans serve as the rear enclosure or housing for ceiling speakers in suspended ceilings, helping support installation and optimize acoustic performance. They are built to meet safety requirements for plenum (air‑handling) spaces when used with corresponding UL‑listed speakers.

Key Features

• Pack of 6 backcans for 4″ ceiling speaker installations

• Designed for CSS‑8004 ceiling speaker compatibility

• Works with CSS‑TR4/8 tile rails in suspended ceiling frameworks

• Steel construction with zinc plating and powder coating for durability

• Five conduit knockouts (four on sides, one on top) for flexible wiring

• 4 mounting points on a 6.5″ bolt circle for secure attachment

• Plenum rated when installed with appropriate UL‑listed speakers