Double-bank louvre for applications where a continuous blade appearance is desired and a high level of rain defence must be maintained.
ENTRY
DISCHARGE
Classifications based on testing to EN 13030.
Features & Advantages
- The A-3250 ventilation louvre blades create a continuous line across a façade
- A high-performance vertical blade louvre module is positioned at the rear to offer excellent protection against wind-driven rain ingress
- Rear modules are powder-coated black as standard to conceal their appearance
- Front blades are clipped on-site into the blade braces, which are pre-attached to the rear modules
- Where only parts of the façade are functionally active, blanking panels are installed behind the ventilation louvres in non-active zones, helping to reduce costs
- Sightproof design
KEY FEATURES
- Blade orientation: front – horizontal blades, rear louvre – vertical blades
- Joint options:
- Horizontal: invisible or visible
- Vertical: invisible or visible
- Overall depth: min. 207 mm
- Blade pitch (front): 75 mm
- Weight: 36 kg/m2, based on a 2 m x 2 m module size
- Maximum dimensions (based on 1.5 kPa wind load):
- Rear modules
- Max width: 3600 mm*
- Max height: 3600 mm*
- Front blades: standard width 3000 mm
* Maximum unit weight: 150 kg, including accessories. Site access and lifting capability should be assessed prior to specification and installation.
- Rear modules
Download Technical Datasheet for detailed drawings.
PERFORMANCE
SUMMARY
- Airflow Class: 3 (entry & discharge)
- Airflow Coefficient Ce (entry): 0.294
- Airflow Coefficient Cd (discharge): 0.299
- Wind-Driven Rain Performance Class:
- 13 m/s, 75 mm/hr = A up to 3.5 m/s
MATERIALS & FINISHES
MATERIALS
- Aluminium alloy 6063-T6
- Nominal thickness:
- Front louvre – 1.60 mm for blades
- Rear louvre – 1.52 mm for blades, 2.03 mm for head, cill and jamb frames, and for mullions
- Aluminium components are manufactured with a minimum of 55% recycled content (mix of pre- and post-consumer scrap)
FINISH OPTIONS
- Front blades:
- Mill finish aluminium
- Clear or colour anodised
- Polyester powder-coated – matt (standard) or gloss
- Rear louvres: powder-coated matt black as standard
OPTIONAL EXTRAS
- Head / side flashings
- Blanking panels (single skin or insulated)
- Bird / vermin guards, insect mesh
- Dampers
PROJECTS
Specifikáció
Guidance
The principal reason for using louvres is to allow the movement of air. But, louvre specification is a balance between form and function, with louvred façade appearance playing an important part in the selection process.
