Connect the Flush Acoustical to Drywall Transition Reveal (FADR) trim to the suspended ceiling grid using the Ceiling Grid Trim Clips included. Rotate the Ceiling Grid Trim Clip into the slots on each side of the FADR trim and tighten the lock screw. Then attach the Ceiling Grid Trim Clip to the acoustical ceiling grid and to the suspended drywall ceiling grid. Once the FADR is attached to both suspended ceiling grids, attach the drywall in behind the its thinning mud flange when attaching it to the suspended drywall ceiling grid. Insert a fastener through the trim's flange and drywall edge into the grid system. Apply compound joint over the flange and feather accordingly. The acoustical ceiling tiles can now be installed on the other side of the Flush Acoustical to Drywall Transition Reveal. Use the included Ceiling Cloud Trim Splices to connect one piece of trim to the next for level and clean butt joints. All Cloud Edge Trims must be cut accurately and installed with tight, neat joints. Ceiling Cloud Splices, Use the included Ceiling Cloud Trim Splices to connect one piece of trim to the next for level and clean butt joints. All Cloud Edge trims must be cut accurately and installed with tight, neat joints. Manufacturer recommends that a carbide tip blade along with blade lubricant be used when cutting any aluminum trim