Version W433/S and W433/L
Overpressure flap
Ventilation grille W433, front view
Ventilation grille W433, rear side
Material
Made of aluminum profiles: AlMgSi 0.5 (according to EN 12020-2)
Silver color (E6/EV1) (20 micron) anodized or powder coated according to RAL color shades (60-80 micron). Bronze color anodized not possible
Multi-leaf dampers: All dampers open simultaneously
Overpressure flap: All flaps open individually
Without insect screen
Opening pressure: 10 Pa standard, 20 Pa with optimized dampers
Dimensions overpressure flap W433
Height: (a multiple of 100) + 328 mm
Minimum dimensions: 300 x 328 mm
The slats are up to 800 mm long in one piece
Please specify when ordering: Overall dimensions (width x height)
Mounting height: 29 mm
Dimensions multileaf damper W433/S
Standard dimensions see below
Mounting
Invisible fastening
Screws and dowels included
Typical application areas
Fume hood
Drying cabins
Bearing ventilation grille
Ventilation grille with louvre damper from stock
| Width x height | anodized E6/EV1 | Standard color white | Store prices |
| Multileaf dampers W433/S | |||
| 173 x 173 mm | yes | yes | Price |
| 210 x 210 mm | yes | yes | Price |
| 246 x 246 mm | yes | yes | |
| Overpressure flap W433/L | |||
| 328 x 328 mm | yes | nein | |
| 428 x 428 mm | yes | nein | |
| 528 x 528 mm | yes | nein |
Sectional drawing ventilation grille overpressure flap
Overpressure flap
Ventilation grille with overpressure flap
Combination of overpressure flap type W433 and ventilation grille type W414
English 
German