Ventilation grille, medium weight version,

Blade spacing 50, optically free cross-section 70%, physically free cross-section 60%.

Download .PDF Lüftungsgitter W481 [164 KB] 

Aluminum ventilation grille w481, front view

Ventilation grill W481 with fly gauze

Material

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

Dimensions

Slat spacing: 50 mm
Installation depth: 46 mm
Overlap dimension: 40 mm
Minimum dimensions: 150 x 150 mm
Please specify when ordering the ventilation grilles: Installation dimension (width x height)

Mounting the ventilation grilles

Wall anchor no. 1428
For ventilation grilles from approx. 3 m², a substructure provided by the customer is necessary, suitable for span width and wind load

Options

Water drainage channel
Watershed
Removable insect screen
Filter
Without stop frame
Ventilation grille for frame installation 484

Ventilation grille sectional drawing

Ventilation grille sectional drawing

Technical data ventilation grille W481
Air diffuser EN 13030
K-factor (supply) 9,41
K-factor (discharge 9,47
Ce coefficient 0,326
Cd coefficient 0,325
Optical free cross section 70%
Physical free cross section 60%
IP class (ventilation grille with insect screen; electrical installation at least 105mm from ventilation grille). IP2XD
Tender specification W481

Ventilation grille with horizontal fixed extruded ALU weather protection blades (AL Mg Si 0.5),
Slat spacing 50mm, with L-shaped frame for wall installation,
anodized in natural color / coated in RAL ...., with backside
Stainless steel insect screen 2.3×2.3mm mesh, Physical free cross section 60%.
Shell opening : ... x ...mm

Make: rotec ventilation grille Berlin
Model: W481 for wall mounting
Item no.: W481

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