Round ventilation grille W421R

Round grille, medium-heavy version, with stop

Download PDF rundes Lüftungsgitter W421R [122 KB] 

Ventilation grille view from front

Back of the ventilation grille with stainless steel fly gauze

Material

Made of aluminum profiles: AlMgSi 0.5 (according to EN 12020-2)
304 stainless steel insect screen (machining on request)
Silver color (E6/EV1) - bronze color (E6/C34) (20 micron) anodized or powder coated according to RAL colors (60-80 micron)
Frame welded on one side only

Dimensions

Slat spacing: 50 mm
Installation depth: 57 mm
Overlap dimension: 22 mm
Minimum diameter: 400 mm

Maximum diameter:
- 1400 mm if anodized in E6/EV1
- 1500 mm if RAL powder coated
- Above 1500 mm: 2-part

Mounting

Wall anchor pre-mounted on the frame

Typical application areas

Applications where aesthetics and stability are key parameters

Sectional drawing

Technical data ventilation grille W421R
Air diffuser EN 13030
K-factor (supply) 13,42
K-factor (discharge 9,35
Ce coefficient 0,273
Cd coefficient 0,327
Optical free cross section 70%
Physical free cross section 47
IP class (ventilation grille with insect screen; electrical installation at least 100 mm from ventilation grille). IP2XD
Tender texts round ventilation grille

Ventilation grille W412R: round grille, for wall installation, with V-blades

with puncture-proof and horizontal V-blades made of aluminum (AL Mg Si 0.5),
Slat spacing 20mm, with L-shaped frame for wall installation, frame welded on one side only,
natural anodized / coated in RAL ....,

with stainless steel insect screen on the back, shell opening : ... x ...mm

Make: rotec ventilation grille Berlin
Model: W421R, Round
Item no.: W421R

Printable version