This Hackensack NJ Roof S-B Truss Sign identifies a building as having a roof truss construction, and also informs firefighters that there is a sprinkler system in the basement area only to aid in firefighting efforts. This Hackensack New Jersey truss emblem must be permanently affixed to the left of the main entrance door at a height of between four and six feet above ground and shall be installed and maintained by the owner of the building.