Hercules Product Info 
Hercules Product IdDOMJ
Product DescriptionJ-FLANGE 12FT 1.34IN STL 2GA
Unit of MeasureFT
Manufacturer Info 
Manufacturer NameDuro Dyne
Brand NameDuro Dyne®
Part Number21234
Product UPC797582086347
Product DescriptionDuro Dyne® 21234 J-Flange, 12 ft, 1.34 in W Flange, Steel, 20 ga
Product Features
Flange is designed to strengthen the duct wall and connect duct sections together. All Duro Dyne® Dyn-O-Mate J flange is furnished with an integrated sealant pocket for a secure air tight fit and meets SMACNA rigidity class J for transverse joints (steel). Bundles of 20 ft lengths are available only with a full truckload order and most styles are available in specialty metals. All Dyn-O-Mate corners in the J system are a skid quantity of 48 boxes.
Designed to strengthen the duct wall and connect duct sections together
Furnished with an integrated sealant pocket for a secure air tight fin
Manufactured from 20 ga steel in 10 ft, 12 ft and 20 ft lengths
Sealant pocket for all flange
Five flame spread
20 years minimum life expectancy
Applications: Large Commercial and High-Pressure
Product Documents 
Document TypeDownload Link
Specification SheetDOMJ_Specification Sheet (pdf)
CatalogDOMJ_Catalog (pdf)
Product Specifications 
Size 12
Flange Width 1.34
Gauge 20
Material Steel