Compact unidirectional aluminum baffle/enclosure with one-piece grille provides long lasting service indoors or out. Sturdy assembly features a spun .038 aluminum housing and mounts easily to walls, ceilings, or to 4" (102mm) octagon E.O. boxes (manufactured by others). The model 410-8 mounts a standard 8" (203mm) speaker (will not work with 8W Transformers). Baffle interior is undercoated and patchjute lined to prevent mechanical and acoustical resonance. Finished in satin aluminum