The EcoBOSS® Heavy Duty Barometric Damper is designed to automatically bleed in air to avoid fan instability and maintain suitable conveying velocities in duct lines.

STANDARD FEATURES:

• Heavy duty galvanized steel construction
• Heavy duty adjustable counterweight with safety chain
• Removable inspection door
• Sizes 6″ through 18″: 90º flared ends for use with optional quick connection clamps and adaptors
• Sizes 20″ and larger: Flanged ends with co-flanges