Backdraught shutters for surface mounting with aluminium frame and PVC blades

• For air exhaust in any type of installation.
• The blades will open when the shutter is exposed to overpressure. Pressure of 20 Pa for air speed of 2m/s, 25 Pa for air speed of 3m/s, and 30 Pa for airspeed of 4m/s

• Aluminium and PVC combination

• Solid frame made of aluminium, finished grey, RAL7015
• Grey PVC blades
• Model A size upto 590 X 590 made out of 1 frame and simple blades
• Model B from size 670 X 670 is reinforced with a central fixing bar and double row of blades

• Grey, RAL 7015

• Mounted by invisible screws behind the blades

• Srews (included)

• The air exhaust shall be effectuated through backdraught shutters, surface mounted with PVC blades and solid aluminium frame. The blades will open at a pressure of 20 Pa for air speed of 2m/s, 25 Pa for air speed of 3m/s, and 30 Pa for airspeed of 4m/s
• Finish RAL 7015
• ATC Type VK

• VK, 240 X 240 

Explanation

VK = Type grill

240 X 240 = Exterior size grill