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MASTER SPECIFICATIONS Division 23 HEATING VENTILATING …
23 0516 expansion fittings and loops for hvac piping . 23 0517 sleeves and sleeve seals for hvac piping . 23 0518 escutcheons for hvac piping . 23 0519 meters and gages for hvac piping . 23 0523 general duty valves for hvac . 23 0529 mechanical supporting devices . 23 0550 vibration isolation . 23 0553 mechanical systems identification
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