Prefabricated Ducting Solution

Greencon delivers you the perfect prefabricated ducting solution with their state-of-the-art prefabricated duct manufacturing set-up. Prefabricated ducts manufactured with international standards avail easy and quick installation with desired precision. Our prefabricated ducts are engineered for maximum efficiency, providing seamless integration into any HVAC or ventilation system.

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	16 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.