Raise or lower video projectors weighing up to 300 pounds with a push of a button. Heavy duty, all metal construction with rack and pinion, chain drive lift mechanism for quiet operation. Bottom of lift is adjustable for flush installation and can be finished to match ceiling. Complete with three position control switch with cover plate. Optional plenum kit available where needed. Plenum covers meet plenum building codes for Da-Lite's complete line of concealed projector lifts. Da-Lift 10M is designed to fit into a 2' x 2' ceiling grid.