The branch duct connects to the side of the main duct utilizing a forty-five degree entry conforming to SMACNA standards. A minimum clearance of six inches is maintained. High-velocity duct systems require a noted entry opening restriction not to exceed fifteen hundred feet per minute to avoid noise generation.
6" MIN NOTE: WHEN USING THIS TAKE-OFF FOR HIGH VELOCITY DUCT SYSTEMS THE ENTRY OPENING SHOULD BE NOTED: "NOT TO EXCEED 1500 FPM" TO AVOID NOISE GENERATION. BRANCH DUCT 45° ENTRY PER SMACNA MAIN DUCT
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