An eighteen-gauge support angle measuring one and one-half by one and one-half by three inches attaches directly to the acoustical T-bar ceiling grid. An eighteen-gauge angle measuring one and one-half by one and one-half inches connects to the support angles using typical sheet metal screws to form the perimeter of the pipe drop opening. A ceiling collar surrounds the pipe penetration below the finished ceiling level. Dimensions are field-verified to suit varying site conditions.
18 GAUGE SUPPORT ANGLE 1-1/2"x 1-1/2"x3" ATTACHED TO T-BAR CEILING COLLAR ACOUSTICAL T-BAR FINISHED CEILING 18 GAUGE ANGLE 1-1/2"x1-1/2" ATTACHED TO SUPPORT ANGLES 1-1/2"x 1-1/2"x 3" SUPPORT ANGLE 18 GAUGE ANGLE 1-1/2"x1-1/2" ATTACHED TO 1-1/2"x 1-1/2"x3" SUPPORT ANGLE 1" PLAN CEILING GRID T-BAR PIPE DROP OPENING SHEET METAL SCREWS (TYPICAL) A FIELD VERIFY VARIES . . 1" 1" .
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