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Ventech wall louvers factory direct supply bulk buy

Ventech wall louvers factory direct supply bulk buy

Back Draught Damper
Guangdong, China (Mainland)
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Back Draught Damper




Ventilation damper the type back draught damper is a non-return damper for extract air. Made of galvanized sheet, for installation into round ducts, to shut the duct automatically when extraction of air stops. Prevent the outside air flow back.




Nominal sizes: 100, 125, 150, 200, 250, 315.

For non-return air control.

Fame made of galvanized sheet 0.8mm, inner shutter made of aluminum 0.3mm.


For installation into round ducts.

Specially designed springs allow accurate control of the shutter.


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The high-quality material and innovative technology make Ventech air flow louvers of the finest craftsmanship. All high level raw materials are used to manufacture high quality artificial stone
Ventech wall louvers is produced from design to production which is under exquisite management. Advanced manufacturing technology is adopted for KKR artificial stone
The product features reliable operation. It has an advanced electrical system that is equipped with overvoltage, overcurrent, and overheating protection. KKR artificial stone is fashionable and premium-marketed
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