Atlas Sound E410-11 4" Torsion Mount Enclosure, 11" Deep are designed for use with Atlas Sound torsion spring grilles and standard 4" loudspeakers. These are constructed made of gauge CRS, undercoated, equipped with torsion spring receptacles, and finished in a textured black epoxy.
This model is a high-volume, 1.2 cubic foot that
enhances the low frequency response of an installed loudspeaker. Model E410-
11 has a depth of 11" and includes high-density fiberglass fill to absorb
internal sound reflection.