High quality & reasonable Price,can use repeatedly, wide usage range, flexible for installation. Standard size: AOR Standard thickness: 1.0mm, 1.5mm, 2mm, 2.5mm,2.75mm, 3mm Standard length: AOR Advantages:  Completely adjustable  High strength to cost ratio  No welding or drilling required  Strut is re-usable  One-inventory adaptable to many jobs  Saw and wrench are the only tools needed   A Few Endless Uses: Shelving...Storage Racks...Curtain Wall Supports...Piping Supports...Pipe Tunnel Frameworks...Equipment Framing...Mechanical Room Grids...Concrete Inserts...Cable,Conduit,Cable Tray Or Bus Support...Luminous Ceiling Supports...Raceway System Supports...Mezzanine Framing...Fluorescent Fixture Supports...Drop Frames...Partition Framing...Displays   Surface Finish:  Pre galvanized steel layer between 80-180g    Powder coated between 60 and 150 microns thick Hot Dipped Galvanized-for outdoor use to BS EN 1461-1999, between 60 and 80 microns thick Stainless steel 304/316