High-pressure branch take-offs utilize a rectangular-to-rectangular low-loss fitting attached to supply, return, or exhaust air mains. Connections are secured with sheet metal screws and sealed using medium-pressure duct sealer. Openings in the main duct must be cut accurately to match the required shape and size.
NOTICE: 1. ALL HIGH PRESSURE BRANCH TAKE OFFS SHALL HAVE LOW-LOSS FITTINGS. SUPPLY, RETURN OR EXHAUST AIR MAIN RECTANGULAR TO RECTANGULAR LOW-LOSS FITTING ATTACH WITH SHEET METAL SCREWS AND SEAL WITH MEDIUM PRESS. DUCT SEALER OPENING CUT ACCURATELY (SHAPE & SIZE)
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