erd-8 quam back box speaker enclosure  round, steel loudpseaker back box. a circular, molded

• category uumw ul listing, suitable for plenum use
• ssb-2 tile bridge sold separately is ul approved when used with the erd-8 series
• baffle mounting j-nuts are securely captured in mounting flange eliminating loss during transit & installation
• four slots at 90 provide quick attachment to ssb-2 tile bridge without need for additional hardware