This 191-78-8 Extra Deep Enclosure with Adjustable Mounting Bracket  with acoustic fiberglass lining extends quality and enhances performance of 8" dia. commercial and professional loudspeakers. The increased volume of this enclosure extends the low frequency response by improving acoustic loading. Backbox inner surfaces are undercoated to prevent metallic resonance in the higher end of the frequency spectrum and lined with 11/2" (38 mm) thick high density fiberglass (11/2 lbs. per cu. ft.). This unit is designed for recessed mounting and includes adjustable mounting bracket for installation flexibility in a variety of ceiling types and depths. Constructed of heavy-gauge CRS and include four conveniently located combination conduit knock-outs to facilitate installation. Finished in rust-preventive, textured black coating.

• Generous Acoustic Fiberglass Lining Improves Low Frequency Response to Achieve Fuller, Richer Bass
• Loudspeaker Enclosures with Greater Cubic Capacity Provide Improved Loading to Enhance High-Quality Sound Systems
• Square, Recessed, Mounting Model Meets Professional Sound Installation Requirements
• 2 Mounting Rails Included