WL • External Louvre

• HVC

• External mounted louvres to provide to use with intake or extract ventilation.

• Extruded aluminium frame and blades, BZP or aluminium fixings

• Standard: Mill finish aluminium.
• Optional: Polyester powder coated to any RAL or BS colour

Standard weather louvres are available in the following series:

• WL38: 40mm blade pitch (for units up to 1m x 1m nominal size)
• WL50: 50mm blade pitch (recommended for units up to 2m²)
• WL75: 75mm blade pitch (recommended above 2m²)
• WL100: 90mm blade pitch (by request onlyFree area: 50%.

• Mass/m2: WL38 and WL50 - 12 kg, WL75 - 15 kg, WL100 - 16 kg.

  
  

• Flanged or Recessed Mounted.

• Plenum Boxes-SEPB, Volume Control Dampers.

Standard weather louvres are available in the following series:

• WL38: 40mm blade pitch (for units up to 1m x 1m nominal size)
• WL50: 50mm blade pitch (recommended for units up to 2m²)
• WL75: 75mm blade pitch (recommended above 2m²)
• WL100: 90mm blade pitch (by request only

• WL38 38mm pitch weather louvre
  
• WL50 50mm pitch weather louvre
  
• WL75 75mm pitch weather louvre
  
• WL100 100mm pitch weather louvre
  

• . (nothing) Flanged
  
• REC Recessed frame
  
• REV Reversed frame
  

• BM Bird mesh (12mm x 12mm mesh)
  
• IM Insect mesh
  

• FH Pre-punched face fixing holes
  
• RFL Rear mounted fixing lugs
  
• GZ Glazing bar. State depth required.
  

• 30FW WL38 and WL50: 30mm flat flange (standard)
  
• 25F 25mm flat flange (optional)
  
• 50FS 50mm flat flange - shallow (optional)
  
• 3” x 2” x 1/8” 3” (76.2mm) flat flange (optional)
  
• 4” x 2” x 1/8” 4” (101.6mm) flat flange (optional)
  
• 50FD WL75 and WL100: 50mm flat flange - deep (standard)
  
• 3” x 3” x 1/8” 3” (76.2mm) flat flange (optional)
  
• 4” x 4” x 1/8” 4” (101.6mm) flat flange (optional)
  

• DC Face mounted drip cill (not available with WL38)
  
• DT Rear mounted drip tray (required for Class C performance with WL75)
  

• M Mill aluminium (standard)
  
• S Satin anodised - AA5 (only available with WL38)
  
• R... Polyester powder coated to RAL...
  
• B... Polyester powder coated to BS...
  

• _S Number of sections required. If left blank this will be confirmed on order acknowledgement
  

• BB Burglar bars required