PEERLESS-AV IBA2-W In-Wall Metal Box Large with Knock Out (Large) Holds up to 25lbs; Low-profile design fits behind thinnest mounts & flat panel displays; Installs between 16" wood stud centers when positioned vertically; Heavy gauge cold-rolled steel construction; Positions horizontally or vertically to create the best look; Includes cable ties & grommet; Large; White