Armstrong Ceiling Solutions recommends the use of #435 Stabilizer Clips for 3/4" and 1" thick panels and #436 for 1-1/2" panels. These clips are embedded into the edges of the panels. The clips saddle over the suspension system, and serve to prevent the grid from moving away from the panel edge.
WARNING:Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Rocky Top Materials, Inc. 2707 John Deere Dr., Knoxville TN, 37917 US