OPEN BOX Product info: metal back-box enclosure for in-ceiling speakers with 8-inch woofers designed for pre-construction installation — not for retrofitting manufactured from high-grade cold-rolled steel and features a layer of insulation reduces sound leaking into adjoining rooms optimized enclosure volume provides consistent acoustic performance regardless of construction variations exceeds one-hour fire-rating requirements and meets UL2043 requirements for installation in plenum spaces tested to meet UL 263, ASTM E119-98, NFPA 251, UBC 7-1, and ULC CAN/ULC-S101 – M89 standards fits 16″ stud spans includes hardware needed for any installation application and provisions for standard conduit connections pre-drilled holes simplify installation…
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