A merchandise display system comprising: a pusher structure having a pusher face and a pusher carriage, the pusher carriage slidably-coupled to a linear track, the linear track comprising a longitudinal length with a first end and a second end, a ratchet rack extending along the longitudinal length of the linear track, said ratchet rack having a plurality of ratchet teeth; characterised by: a lock arm, pivotably-coupled to the pusher structure at a first end, and having a pawl at a second end configured to engage with the ratchet rack between a selected two of the plurality of ratchet teeth; and a pull strip configured to slide within a channel on the linear track, the pull strip having a first end configured for manual actuation, and a second end having a ramp configured to slidably engage with a tab on the lock arm, wherein upon actuation of the pull strip, the ramp slidably engages with the tab to disengage the pawl from the ratchet rack. a pusher structure having a pusher face and a pusher carriage, the pusher carriage slidably-coupled to a linear track, the linear track comprising a longitudinal length with a first end and a second end, a ratchet rack extending along the longitudinal length of the linear track, said ratchet rack having a plurality of ratchet teeth; characterised by: a lock arm, pivotably-coupled to the pusher structure at a first end, and having a pawl at a second end configured to engage with the ratchet rack between a selected two of the plurality of ratchet teeth; and a pull strip configured to slide within a channel on the linear track, the pull strip having a first end configured for manual actuation, and a second end having a ramp configured to slidably engage with a tab on the lock arm, wherein upon actuation of the pull strip, the ramp slidably engages with the tab to disengage the pawl from the ratchet rack. the linear track comprising a longitudinal length with a first end and a second end, a ratchet rack extending along the longitudinal length of the linear track, said ratchet rack having a plurality of ratchet teeth; characterised by: a lock arm, pivotably-coupled to the pusher structure at a first end, and having a pawl at a second end configured to engage with the ratchet rack between a selected two of the plurality of ratchet teeth; and a pull strip configured to slide within a channel on the linear track, the pull strip having a first end configured for manual actuation, and a second end having a ramp configured to slidably engage with a tab on the lock arm, wherein upon actuation of the pull strip, the ramp slidably engages with the tab to disengage the pawl from the ratchet rack. a lock arm, pivotably-coupled to the pusher structure at a first end, and having a pawl at a second end configured to engage with the ratchet rack between a selected two of the plurality of ratchet teeth; and a pull strip configured to slide within a channel on the linear track, the pull strip having a first end configured for manual actuation, and a second end having a ramp configured to slidably engage with a tab on the lock arm, wherein upon actuation of the pull strip, the ramp slidably engages with the tab to disengage the pawl from the ratchet rack.