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Ventech ventilation louver grilles supply for sale

Ventech ventilation louver grilles supply 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 ventilation louver grilles supply for sale-1

Ventech ventilation louver grilles supply for sale-2

All shapes and all sizes of ventilation louver grilles can be selected by you. The product has the advantage of good shrinkage
As one of the advanced characteristics, ventilation louver grilles has won warm praise from customers. It can withstand the corrosion of chemical substances, such as weak alkalis
The well-selected ventilation louver grilles materials guarantee the quality of ventilation louver grilles. The product has a tidy and neat texture
ventilation louver grilles has advanced performance index with ventilation louver grilles design. Its natural fibers ensure it is skin-friendly and won't cause any allergies to people
ventilation louver grilles is used as supporting materials for ventilation louver grilles. The drape performance of the product has been greatly improved
The product will neither get rust or deformation under high temperature. It has been thermally treated during its production to improve its chemical properties. Its anti-static performance has brought it much popularity
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