Lockable roll-up door assembly

Abstract

A roll up door assembly is mountable in two tracks laterally spaced from one another, each track including a catch, the roll up door assembly including a door sized to be mountable and slidable along the tracks between a closed position and an opened position, the door being a roll up door including a plurality of slats extending between the tracks, one of the slats being a locking slat having an outer surface and an inner surface and defining a passage therethrough between the outer surface and the inner surface. A housing is attached to the outer surface of the locking slat, the housing defining an opening therethrough aligned with the passage. A key cylinder extends through the passage and the opening. A two-point latching assembly has two latches for selectively engaging the catches and is rotatably driven by a rear portion of the key cylinder adjacent the inner surface of the locking slat. A fixing member threadedly engages an outer surface of the key cylinder to secure the key cylinder to the housing, the fixing member being annular and being configured with the housing and the locking slat so that the fixing member has an axial length at least as long as a distance between an inner surface of the housing and the outer surface of the locking slat when the fixing member is positioned to secure the key cylinder to the housing.