metal curtain partitioning walls featuring stationary and movable individual panels, sliding doors, sliding doors with swing doors, folding doors, horizontal sliding walls, dividing walls and partitioning walls, particularly movable partitioning walls, as well as folding walls and folding doors, all made primarily of metal; metal accessories for partitioning walls, namely, locks, excluding electrical locks, and lock boxes, kick plates, handles, door knobs, clamping and connecting joinery fittings, protective fittings in the nature of plates and covers for locks, guard rails and guard rail systems consisting of gaskets and clamp-on fittings

pneumatic and hydraulic door and wall openers and automatic control devices and feed-back control devices being parts of pneumatic and hydraulic door and wall openers for moving partitioning walls having stationary and movable individual panels, sliding doors, sliding doors with swing doors and folding doors

non-metal partitioning wall panels and sound insulated wall panels featuring stationary and movable individual panels, sliding doors, sliding doors with swing doors and folding door, all made primarily of wood and glass