The JBL CSS-BB8x6 delivers professional-grade infrastructure for commercial ceiling speaker installations. This six-pack of zinc-plated steel backcans integrates seamlessly with JBL CSS8008 and CSS8018 speakers in suspended ceiling environments. Each unit features a robust powder-coated finish, five strategically positioned conduit knockouts for streamlined wiring, and a 4.0-liter air chamber optimized for acoustic performance. Meeting UL1480, UL2043, NFPA 90, and NFPA 70 certifications, these enclosures ensure code compliance in air handling spaces. Compatible with CSS-TR4/8 tile rails, they provide a reliable foundation for distributed audio systems in commercial facilities.