Allvent Circular Intumescent Fire Damper - w/ Rigid Steel Framed Grille

The Allvent Circular Intumescent Fire Damper allows ventilation airflow through fire-rated walls and floors, with up to 2 hours of fire protection in suitable installations. Its rigid steel-framed grille contains intumescent material that expands when exposed to heat, forming a fire stop barrier.

Designed for builders, ventilation installers and maintenance professionals, this circular fire damper can be fitted into steel ductwork. During normal operation, its open grille allows air to pass through the ventilation opening. The design has no moving parts, eliminating the need for operational checks on moving damper components.

Choose from six nominal sizes to suit your ventilation installation. Add the Allvent Circular Intumescent Fire Damper to your cart for your next project.

• Heat-Activated Barrier: Intumescent material expands to form a fire stop.
• Normal Ventilation: Allows airflow through the opening before activation.
• Steel Duct Integration: Can be fitted into steel ductwork.
• No Moving Components: Eliminates operational checks on moving damper parts.
• Rigid Construction: Steel frame supports the intumescent grille.

• Brand: Allvent
• Product Type: Circular Intumescent Fire Damper
• Frame Material: Steel
• Fire Protection: Up to 2 hours, subject to approved installation
• Operating Principle: Intumescent material expands under heat to form a fire stop barrier
• Applications: Ventilation openings through fire-rated walls and floors
• Duct Compatibility: Can be fitted into steel ductwork
• Moving Parts: None
• ALVIFDR4 / ALV501 Nominal Size: 100MM (4" Inch)
• ALVIFDR5 / ALV502 Nominal Size: 125MM (5" Inch)
• ALVIFDR6 / ALV503 Nominal Size: 150MM (6" Inch)
• ALVIFDR8 / ALV504 Nominal Size: 200MM (8" Inch)
• ALVIFDR10 / ALV505 Nominal Size: 250MM (10" Inch)
• ALVIFDR12 / ALV506 Nominal Size: 300MM (12" Inch)
• Warranty: 2 years

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