Product main features

• Fixed frame in painted, galvanized or stainless steel. Blades of galvanized or stainless steel. Maintenance free bearings and shafts.
• Models for horizontal or vertical installation.
• Blades contain silicone seal to lower the leakage through blades.
• Blades linked and open in parallel
• Opening pressure adjusted by changing the position of counterweights
• Opening pressure range between 30 Pa and 150 Pa (up to 300 Pa optional)
• Counterweight included as standard
• Maximum duct pressure 5000 Pa, maximum air velocity 15 m/s