Industrial Building Terms, in Plain English

Clear height
The usable height inside a warehouse from floor to the lowest beam or sprinkler. It decides how high you can rack.
Dock-high door
A loading door at truck-bed height so trailers load straight onto the floor.
Grade-level door
A ground-level roll-up door for vans, box trucks and forklifts.
Truck court
The paved area where trucks maneuver and park at the docks.
IOS (industrial outdoor storage)
Land used mainly for parking trucks, trailers, equipment or materials, often with a small building.
Power (amps/volts)
The electrical service to the building. Manufacturing users often need more than standard.
NNN (triple net)
A lease where the tenant pays rent plus property taxes, insurance and maintenance.
Owner-user
A business that buys the building it operates in, instead of leasing.