high-quality alum louvers manufacturer bulk buy

Back Draught Damper

Applications:

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.

Descriptions:

● 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.

high-quality alum louvers manufacturer bulk buy-1

high-quality alum louvers manufacturer bulk buy-2

t******z

alum louvers is one of the factors that Yingde Ventech Air Conditioning Co.,Ltd emphasizes during material selection. Most of SUMWIC winding machines feature off-power memory retention

b******w

What Yingde Ventech Air Conditioning Co.,Ltd is utilizing for material of alum louvers is double checked for quality. As super elevated wisdom model, SUMWIC winding machine has self-inspecting functions

h******k

All alum louvers may be the same, but alum louvers make us take the lead.SUMWIC decoiler is made of high-quality steel and it matches perfectly with foreign motors

k******c

It has been proved through industrial tests that alum louvers has met design requirements. The speed of the cop motor of SUMWIC machines can be changed at random when in operation

i******h

alum louvers attracted attention with a particular design, it was regarded a alum louvers with great expansibility. The winding process will be done with high speed & high precision by SUMWIC machine

f******g

alum louvers can stand all kinds of strict tests before putting into use. All SUMWIC machines have low noise level

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