Prefab Duct

Greencon delivers perfect ducting with their state-of-the-art pre fabricated duct manufacturing set-up. Ducts manufactured with international standards avail easy and quick installation with desired precision.
Greencon has well equipped facilities to provide quality ducting and hassle-free solutions with expercience of decades.


FOR SELECTION OF FLANGE CLASS & DUCT GAUGES WITHIN 1200 MM SPACING
Duct Duct Pressure in inches / (Pascals)
Dimension 1"(250) 2"(500) 3"(750) 4"(1000) 6"(1500) 10"(2500)
(In mm) Reinforcement Class - Duct Gauge
150-250 *1 26 G 26 G 26 G 26 G 26 G 24 G
251-300 26 G 26 G 26 G 26 G 24 G 24 G
301-350 26 G 26 G 26 G 26 G 24 G 22 G
351-400 26 G 26 G 26 G 26 G 24 G 22 G
401-450 26 G 26 G 26 G 26 G 24 G 20 G
451-500 26 G 26 G 24 G 24 G 24 G 20 G
501-550 26 G 26 G 24 G 24 G 24 G 20 G
551-600 26 G 26 G 24 G 24 G 24 G 20 G
601-650 26 G 26 G 24 G 24 G 24 G 20 G
651-700 26 G 26 G 24 G 24 G 22 G 18 G
701-750*2 26 G 26 G 24 G 24 G 22 G 18 G
751-900 26 G 24 G 22 G 22 G 20 G 18 G
901-1000 26 G 24 G 22 G 20 G 18 G 16 G
1001-1200 24 G 22 G 20 G 18 G 18 G
1201-1300 24 G 20 G 18 G 18 G 16 G
1301-1500 24G 18G 18G 16G
1501-1800 22 G 18 G 16 G
1801-2100 20G 18G
2101-2400 18 G 18 G
2401-2700 18 G

SMACNA - Sheet Metal and Air conditioning Contractor's National Association Inc - "HVAC Duct Construction Standards- Metal & Flexible" -1995, U. S.A.

READING GUIDE - For Duct sizes between, say, 701 mm and 750 mm, when the pressure class is 1" w. g. static, we require TDC Flange and duct gauge of 26. For the same range but with static pressure at 4" w. g. TDC Flange with duct gauge of 24 should be used.

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