Prior to installation, the installer must coordinate with the LED or light fixture installer for wiring locations and accommodations. Attach the Universal Light Cove Drywall Shelf to each substrate of the vertical wall with approved fasteners. A precisely cut piece of drywall is then fastened to the underside of the ULCD with self-drilling drywall screws. Apply compound joint over the flange and feather across the piece of drywall accordingly. Use the included Ceiling Cloud Trim Splices to connect one piece of trim to the next for level and clean butt joints. All Strata Cloud trims must be cut accurately and installed with tight, neat joints. Flannery recommends that a carbide tip blade along with blade lubricant be used when cutting any aluminum trim