Full domes provide all round 360 degree coverage of an area, but due to the curvature, the mirror needs to be reasonably large to maintain definition. Use the 450mm or 600mm mirror for office type intersections and the 600mm or 900mm mirror for larger areas typically found in warehouses.Use the larger half dome mirrors in warehouse aisles that end in a ‰Û÷T‰Ûª type intersection.The quarter dome mirrors provide observation around blind corners and give a much larger field of view than a standard convex mirror, but generally have limited application restricting them for use in confined areas.