Lowell SM410A Sound Masking Speaker, 4in

The Lowell SM410A is a 4-inch sound masking speaker for above-ceiling installation, built around a 15W single cone driver and a 70V transformer with taps down to a quarter watt and an OFF position.

The -BR variant adds factory-mounted offset bridge rails; Lowell notes rail-mounted units are made to order and not returnable. Both ship in a 760 cubic inch fiberglass-lined steel backbox with a round-perforation grille. Lowell rates it UL 1480 General Signaling U.S.A., UL 2043 return air plenum space, CSA C22.2 No. 205-M1983. Made in the U.S.A. with global components.

Driver	4 in. 15W single cone driver, paper cone, 10 oz. magnet, adaptor ring
Transformer	70V, taps at 0.25, 0.5, 1, 2, 4W, with an OFF position
Enclosure	760 cu.in. (11.625 in. square x 5.625 in. deep), fiberglass lining, black
Grille	Steel, round perforation, black
Mounting	Removable wire hangers, S-hooks, 4 ft. chain; rigging hardware not included
Compliance	UL 1480 General Signaling U.S.A., UL 2043 return air plenum space, CSA C22.2 No. 205-M1983
Country of Origin	Made in the U.S.A. with global components