A round supply duct sized per plan connects to an eighteen-gauge sheet metal boot secured air-tight to the duct body. An opposed blade damper and a dual deflection register with forty-five degree adjustable horizontal and vertical vanes mount at a forty-five degree angle relative to the horizontal reference line, requiring a two-inch minimum clearance.
ROUND SUPPLY DUCT SEE PLAN FOR SIZE 18 GA. BOOT SECURE TO DUCT AIR TIGHT AIR FLOW 2" MIN. 90º 45º HORIZONTAL LINE O.B.D. DUAL DEFLECTION REGISTER WITH 45° ADJUSTABLE VANES HORIZONTAL AND VERTICAL
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