A lawn mower and a cutter housing assembly can include a cutter housing, a first and second rotation arms, and first and second plates pivotably attached to the cutter housing. The first plate and second plate can be selectively rotatable between: (a) a discharge mode in which the plates are positioned a first distance from the front wall of the cutter housing to provide a first gap, and (b) a mulch mode in which the plates are positioned a second distance greater than the first distance from the front wall to provide a decreased gap. A first actuator and second actuator can be connected to the first and second rotation arms to cause rotation of the first and second rotation arms when actuated. Actuation of the first actuator and second actuator can cause the first plate and second plate to move between the discharge mode and the mulch mode.
