Ventilation building regulations have recently changed in England and Wales.  Although this vent supports compliance, we would urge you to read our handy guide before you purchase which summarises the new requirements. 

Fully tested to current British standards on watertightness, noise and equivalent area performance, the HD slot vent from Greenwood Airvac is a great way to provide background ventilation in habitable rooms.

Key features:

• Shutter style slot vent offering high equivalent area performances
• Up to 3200mm² Equivalent Area (England & Wales)
• High performing external louvred grille offering excellent weather protection
• Front operation only
• Upward air deflection to prevent draughts
• Designed for use on wide window profiles

Performance:

• Optimised airflow: 3200mm² EA
• Air leakage: 0.20 m3/h 0.55 L/s
• Air permeability - meets BS EN 1026: 2000
• Water tightness - meets BS EN 1027: 2000
• 33dB sound reduction, Airborne Sound Insulation - BS EN ISO 717-1: 199

Dimensions:

• This vent 3200mm² EA is 278mm (L) x 28.5mm (H) x 13mm (D)
• Routing slot: 235 x 18mm

Ordering:

• Sold as singles - order internal & external vents separately