Lowell MC-301 Clock/Speaker Center for Analog ClockLowell MC 301 Clock Speaker Center for Analog Clock Steel panel with round perforation grille is designed to accept an 8 in. speaker, a standard 12 in. analog clock and a recessed backbox. Mount horizontally or vertically. Key Features 18 gauge steel panel with round perforation grille and a cutout for a standard 12 in. analog clock For recessed installation, horizontal or vertical orientation 27. 25 in. x 17 in. White finish Hardware studs for