Hvac ventilation system aluminum extract air linear bar grille diffuser

Linear air grille is rectangular aluminium grille with fixed deflectors and can be used in commercial and industrial premises. The grille is intended for supply, or return air. It is build into wall, ceiling, or window sill. Linear bar grille is supplied with springs as a standard. As an accessory there are plenum boxes, mounting frames and dampers available.

Linear bar grille is manufactured from natural anodized aluminium profiles white painted to RAL 9010 or RAL 9016. Dimensions are customer sizes.

Linear grille with their gently sloped border combine function with an attractive design; they can be installed in walls, sills or retangular ducts.

Type LG-VA return grilles have fixed straight blades. There is 0 degree, 15 degree, and 30 degree

LG-VB is hinged type, with removable core.

What is an aluminum linear air grille?

Material: High quality extruded aluminum profile(A6063)

Frame & Cores: Thickness 1.0mm

The frame is made of high quality extruded aluminum profile with advantages of corrosion resistance and rigidity.

Core of hinged time can be easily removable and interchangeable for better installation and maintenance. Great convenience for you!

We Ventech offer high quality, focusing on details carefully especially in power coated and welding corners details.

Automotive powder coated ensures no gaps at the welding corners and provides a good-looking square diffuser for clients. 

Customized-made in size below:

·         Sizes: Customized-made in size:

·         Neck size:customized-made in size

·         Height: 30mm, 25mm, 15mm

·         Face size= neck size+50mm

LG-VA sample pictures:

LG-VB sample pictures:

How to make an aluminum return grille?

In order to make a high quality double deflection grille, Ventech people introduce a whole production line with advanced stamping, punching machines which are operated by experienced workers.

All cores and frames are made by high-efficient machines, then comes to the installation line, we ventech also enjoy the wholly automotive squeezing machines.

Before polishing and filling the putty in the gaps, the air diffuser should be washed for 10mins then baked for 30mins.  Power coated is arranged behind the polishing step, by using totally-closed powder finishing line and parching space, the perfect diffuser rolls off the products line and ready to be packed, QC is the priority during each step of the mass productions. We have professional QC to check quality before products go to next step.

• ·         Clips
• ·               A: installation clip, used for connecting the diffuser/ grille to the celing or wall.
• ·               B: damper fixing clip, used for connecting the diffuser/ grille to the damper.
• ·         Coner protection
• ·         Holes and screw
• ·               Insteady of clips, some people prefer punching holes on frame, and instal the diffuser/ grille with screw. 
•           Damper (can be powder coating)
• ·              OBD-VA, gear manual
• ·              OBD-VB, screw manual

Notice: The above accessories are optionals. Without any specified, we deliver the products without any accessories. 

• ·         Ral classic color.
• ·              -standard Ral 9016 or 9010
• ·              -other colors optional.
• ·         Anodized
• ·         Matt or smooth surface

·         pack in carton, pallect, container.

·         10pcs/ctn without damper

·         5pcs/ctn with damper

hhigh quality brand product VENTECH aluminum linear return and supply air grille

high quality brand product VENTECH aluminum linear return and supply air grille

high quality brand product VENTECH aluminum linear return and supply air grille

high quality brand product VENTECH aluminum linear return and supply air grille

high quality brand product VENTECH aluminum linear return and supply air grille