OKA-A • Duct backdraught shutters

Galvanized steel circular backdraught shutters with aluminium blades for mounting in between 2 ducts

• Cairox

• For airflow control in ventilation systems
• The aluminium blades will open when blades are exposed to overpressure and will shut again when pressure falls away thanks to a stainless steel mechanical spring
• Temperature usage up to 50°C

• Galvanized steel and aluminium

• Body made of galvanized steel
• Blades made of aluminium
• Stainless steel springs

• Galvanized natural finish

• It is recommended to install the shutter into horizontal ducting
• Shutter spindle should be vertical
• The shutter is installed into piping by simple slide-in

• The backdraught shutters for round ducts shall be of the type with galvanized steel body and aluminium blades. They will be mounted in between two ducts to prevent backdraught when the fan stops.
• CAIROX Type OKA-A

• OKA-A, 200

Explanation

OKA-A = Type backdraught damper

200 = Connection diameter