Duct Accessories

DEVO Flanges


DVAC uses the DEVO Accessories to be fixed on the fabrication of Ducts.

DEVO 20   Click to view
DEVO 30   Click to view
DEVO 40   Click to view


Rectangular Ducts are fitted with Flange Frames 20 / 30 / 40
made of GI sheet. It is a method of connecting Air Ducts.
Flanges are usually welded / clinched or fixed by screws / rivets.
Flanged joints are made by bolting two flanges to each other
with a gasket in between, when a rigid connection is required.


VENTO Flanges


DVAC uses the Vento Accessories to be fixed on the fabrication of Ducts.
E20   Click to view
E30   Click to view
A20   Click to view
A30   Click to view
A40   Click to view


All Duct Connectors are according to DW144 & SMACNA Standard Specifications.
Vento flanges are rigid so as to provide uniform pressure over the entire length of the joint.

Vento Flanges comes in three sizes:

  • System 20: Height: 20mm

Flanges for normal pressure and/or Ducts with standard dimensions.

  • System 30: Height: 30mm

Flanges for medium pressure and/or Ducts with medium dimensions.

  • System 40: Height: 40mm

Flanges for high pressure and/or Ducts with large dimensions.


Corners are used for making duct frames and tested according to DIN 24194
and HVAC DW/TM1 Standard Specifications.
Vento Corners comes in two sizes:

  • System 30: For any Duct size out of stamped sheet steel galvanized
  • System 40: For Large Duct sizes out of cold-drawn, galvanized sheet metal 5M Length