All suspended ceiling grid systems can be used with perimeter wall angles. The angle, which is offered in various lengths, is fixed to the outside of every space where suspended ceilings are intended to be installed. The perimeter angle's clean, polished edge serves as support for and concealment of the ceiling grid and ceiling tile's cut edges once it has been properly placed. Additionally, it is used with the primary channels in order to give the horizontal bridging in order to resist rotating and axial stresses.