E410NK 4" Torsion Mount Enclosure, 6.5" Deep. No Knockouts are designed for use with Atlas Sound torsion spring
grilles and standard 4" loudspeakers.It is made of 22
gauge CRS and are undercoated, equipped with torsion spring receptacles, and finished in a textured black epoxy.
These standard 1 4 cubic foot enclosures are identical
except for their torsion tab placement.