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Double Wall Ductwork






22 Gauge Galvanized Double Wall Ductwork


18 Gauge Galvanneal Double Wall Ductwork


22 Gauge Galvanized Double Wall Ductwork


Aluminum Sure Seal Double Wall Lateral
Aluminum Sure Seal Double Wall Lateral


.050 Type 3003 Aluminum Double Wall Duct with TDC connection. Aluminum 3003 Definition – General purpose alloy for moderate strength applications. 20% strength increase over 1100 with same good forming, weld ability and corrosion resistance. Used for general sheet metal work.


.050 Type 3003 Aluminum Double Wall Rectangular Duct with TDC connection. Aluminum 3003 Definition – General purpose alloy for moderate strength applications. 20% strength increase over 1100 with same good forming, weld ability and corrosion resistance. Used for general sheet metal work.


.050 Type 3003 Aluminum Rectangular Double Wall Ductwork with TDC connection. Aluminum 3003 Definition – General purpose alloy for moderate strength applications. 20% strength increase over 1100 with same good forming, weld ability and corrosion resistance. Used for general sheet metal work.










22 Gauge Galvanized 1" Double Wall Spiral Ductwork - Fabrication Step 1. Galvanized Definition - Continuous hot dip process bonds zinc coating to steel. Forms and bends without flaking. A versatile, low cost, corrosion resistant steel. G90 and G60 coatings available per ASTM A525.