AD B-20 Series

Standard Construction

Frame

0.9 mm thick galvanised steel.

Door

Double skin 0.9 mm thick galvanized steel internally insulated. Door thickness 25 mm.

Insulation

48 kg/m³ density rockwool.

Lock

Die cast Zinc plated steel Toggle lock.

Gasket

3 mm thick Neoprene Gasket.

Handle

Galvanized steel handle.

Flange

Type 1 : Plain edge type flange.

Optional Construction

Door

Double skin 0.9 mm thick galvanized steel internally insulated, door thickness 40 / 50 mm.

Hinges

One side Continuous hinges.

Flange

Type 2 : Knock-over edge type flange.

Glass window

Square transparent glass window.

Security chain

Galvanized steel chain.

Frame and Door Material

Stainless steel (304/316L)

Note:
N = Neck size (W x H)
Overall Width = Neck width + 30 mm
Overall Height = Neck Height + 30 mm

Application

• Suitable for installation on plain surface air ducts and can be installed easily on site works.

• The insulated double wall construction will act as a barrier for leakage of air as well as for transfer of heat.

• Suitable for insulated or uninsulated ducts.