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Ventech louvered air vents from China for sale

Ventech louvered air vents from China for sale

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.


 Ventech louvered air vents from China for sale-1

Ventech louvered air vents from China for sale-2

louvered air vents is one of the factors that Yingde Ventech Air Conditioning Co.,Ltd emphasizes during material selection. SUMWIC machine has better performance and stability comparing with other brands
What Yingde Ventech Air Conditioning Co.,Ltd is utilizing for material of louvered air vents is double checked for quality. SUMWIC winding machine is driven by the constant current circuit
All louvered air vents may be the same, but louvered air vents make us take the lead.Most of SUMWIC winding machines feature off-power memory retention
It has been proved through industrial tests that louvered air vents has met design requirements. SUMWIC machines present features such as quick responding speed and high suitability
louvered air vents attracted attention with a particular design, it was regarded a louvered air vents with great expansibility. The roll spool of SUMWIC winding machine adopts step-servo motor
louvered air vents can stand all kinds of strict tests before putting into use. SUMWIC winding machine can adjust the winding speed automatically to the most steady state
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