Ventilation grilles, heavy-duty version, with movable and closable blades, optically free cross-section 88%, physically free cross-section 53%.

Download .PDF Lüftungsgitter rotec W427 [378 KB] 

Ventilation grille W427 in closed state

Ventilation grille W427 with fly gauze

Versions W427

The operating elements for the W427 lockable ventilation grille can be optimally adapted to the structural conditions. The following drive options are available:

Type W427/2 Wire rope Max. 5000 mm, minimum height 390 mm

Type W427/3Crank drive Max. 7000 mm, minimum height 690 mm

Type W427/4With motor 220 V - 24 V, minimum height 690 mm

Type W427/5 Compressed air, minimum height 390 mm

Material

The ventilation grilles are made of aluminum profiles: AlMgSi 0.5 (according to EN 12020-2)
304 stainless steel insect screen - 6 x 6 mm (2.3 x 2.3 mm mesh size on request)
Silver color (E6/EV1) - bronze color (E6/C34) (20 micron) anodized or powder coated according to RAL colors (60-80 micron)

Ventilation grille dimensions

Installation depth: 82 mm
Overlap dimension: 50 mm
Minimum dimensions: 300 x 290 mm
Maximum width in one piece: 1300 mm
Preferred height = (a multiple of 100) + 290 mm
Please specify when ordering: Installation dimension (width x height)

Note: The minimum height depends on operating options (see description).

Mounting

Wall anchor no. W429

Ventilation grille operation options

W427/1 Manual override
W427/2 Wire rope
W427/3 Crank drive
W427/4 Motor 230V-24V / Spring return actuator 24V
W427/5 Compressed air

Options

Without stop frame
Ventilation grille for frame installation see W427GL

Typical application areas

Power plants
Airport
Skyscrapers
Controlled ventilation
Production halls

Assembly of the ventilation grille Frankfurt Airport

rotec moteurs installing the ventilation grilles

BV. Flughafen Frankfurt/Main

Drawings ventilation grille W 427

Technical data ventilation grille W427
Air diffuser EN 13030
K-factor (supply) 11,41
K-factor (discharge 11,65
Ce coefficient 0,296
Cd coefficient 0,293
Optical free cross section 88%
Physical free cross section 53%