Non-Return Damper

• Prevents reverse airflow — gravity or spring-assisted closure
• Lightweight aluminium blades for fast response
• Suitable for exhaust fans, heat recovery, and AHU bypass
• Low opening resistance — minimal pressure drop when open
• Available: horizontal, vertical, or inclined installation
• Galvanized steel frame with airtight blade seals
• Sizes from 150mm × 150mm to 900mm × 600mm
• Optional stainless steel for humid or corrosive installations