Greencon delivers you the perfect prefabricated ducting solution with their state-of-the-art prefabricated 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, basement ventilation systems, and hassle-free solutions with experience of decades.
| FOR SELECTION OF FLANGE CLASS & DUCT GAUGES WITHIN 1200 MM SPACING | |||||||||||
| DuctDuct Pressure in inches | 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.