Alternatively, a standard formula is to measure 45mm to 82mm (depending on tray size) on either side for the cuts. Cut the Side Channels: Cut the flanges (sides) of the tray at a 45-degree angle, stopping at the base of the tray. Select standard elbow fitting layouts or a double-elbow offset configuration. Input centerline radius (CLR) of the elbow. Standard sizes: 12" (300 mm), 24" (600 mm), 36". us-trations without notice. The mechanical and electrical characteristics, tests, certifications, overall quality management, recommendations mentioned. UNITRAY LADDER TRAY is a structure consisting of two longitudinal side members connected by individual transverse members (rungs). Rungs are welded to the side members by either cold metal transfer (CMT/GMAW) or gas tungsten arc welding (TIG/GTAW). Both processes have their inherent advantages and. GRP-elbow 90°, large, for cable tray KK, with unperforated side rails, with moulded connector, glass fiber reinforced polyester, pressed, RAL 7032, pebble grey Refer to the product sheets for more information on product details and compatibility. You want to see all our products and specifications. Creating a 90-degree elbow in an electrical cable tray, often called a "fabricated" or "mitered" bend, involves cutting, bending, and fastening a straight section of tray.