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promotional exhaust louver factory direct supply bulk buy

promotional exhaust louver factory direct supply bulk buy

Promotional exhaust louver 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.


 promotional exhaust louver factory direct supply bulk buy-1

promotional exhaust louver factory direct supply bulk buy-2

exhaust louver is of exquisite workmanship and unique shape.
The production of louvered air intake vents adopts innovative technology and superior materials.
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In order to strictly control quality, Yingde Ventech Air Conditioning Co.,Ltd selects louvered air intake vents as raw material. This product has been certified under CE and RoHS
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The high cost performance makes the product have a broad market prospect in the industry. This product is known for its short response time
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