LVV40 Intumescent Air Transfer Grille – 350H x 350W - Fire Rated Ventilation Grille
The LVV40 Intumescent Air Transfer Grille is a high-performance fire-rated ventilation grille designed for use in fire doors, walls and ducts. Engineered to provide excellent airflow during normal conditions, this intumescent air grille ensures silent and efficient ventilation while delivering essential fire protection when activated.
Manufactured from durable PVC slats with an integrated intumescent core, the LVV40 expands in the event of fire to restrict the passage of flames and hot gases. With approximately 60% free area, it offers strong airflow performance without compromising fire resistance, making it ideal for maintaining ventilation within fire compartmentation systems.
Supplied in a silver finish as standard, the grille can also be used in conjunction with a metal cover grille, where required, to enhance performance.
Key Features
- 40mm thick intumescent air transfer grille
- PVC slats with integrated intumescent core
- Approx. 60% free area for effective airflow
- Silent, efficient operation under normal conditions
- Suitable for fire doors, walls and ducts
- Silver finish as standard
- An optional metal cover grille is available. CLICK HERE.
- Bespoke sizes and larger quantities available on request. Please contact [email protected]
Areas of Application
- Fire-rated doors
- Compartment walls
- Fire-resisting duct installations
Not suitable for environments where high levels of humidity or persistent wetness are anticipated. Please contact [email protected] for suitable alternatives.
Fire Performance & Certification
- Tested to BS 476-20/22:1987
- Tested to BS EN 1634-1:2014
- Tested to BS EN 1364-5:2017
- Fire Resistance: Provides up to 60 minutes
- EI rating of up to 120 minutes when used with a cover grille
- Certifire Approved: Certifire Certificate CF564
Product Specifications
- Thickness: 40mm
- Size: 350H x 350W
- Free Area: Approx. 60%
- Material: PVC slats with intumescent core
- Finish: Silver (standard)
- Size Selection: Choose the size that matches the structural opening
- Ordering Guidance: Order the same size cover plate as the intumescent air transfer grille
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LVV40 Intumescent Air Transfer Grille – 350H x 350W - Fire Rated Ventilation Grille
The LVV40 Intumescent Air Transfer Grille is a high-performance fire-rated ventilation grille designed for use in fire doors, walls and ducts. Engineered to provide excellent airflow during normal conditions, this intumescent air grille ensures silent and efficient ventilation while delivering essential fire protection when activated.
Manufactured from durable PVC slats with an integrated intumescent core, the LVV40 expands in the event of fire to restrict the passage of flames and hot gases. With approximately 60% free area, it offers strong airflow performance without compromising fire resistance, making it ideal for maintaining ventilation within fire compartmentation systems.
Supplied in a silver finish as standard, the grille can also be used in conjunction with a metal cover grille, where required, to enhance performance.
Key Features
- 40mm thick intumescent air transfer grille
- PVC slats with integrated intumescent core
- Approx. 60% free area for effective airflow
- Silent, efficient operation under normal conditions
- Suitable for fire doors, walls and ducts
- Silver finish as standard
- An optional metal cover grille is available. CLICK HERE.
- Bespoke sizes and larger quantities available on request. Please contact [email protected]
Areas of Application
- Fire-rated doors
- Compartment walls
- Fire-resisting duct installations
Not suitable for environments where high levels of humidity or persistent wetness are anticipated. Please contact [email protected] for suitable alternatives.
Fire Performance & Certification
- Tested to BS 476-20/22:1987
- Tested to BS EN 1634-1:2014
- Tested to BS EN 1364-5:2017
- Fire Resistance: Provides up to 60 minutes
- EI rating of up to 120 minutes when used with a cover grille
- Certifire Approved: Certifire Certificate CF564
Product Specifications
- Thickness: 40mm
- Size: 350H x 350W
- Free Area: Approx. 60%
- Material: PVC slats with intumescent core
- Finish: Silver (standard)
- Size Selection: Choose the size that matches the structural opening
- Ordering Guidance: Order the same size cover plate as the intumescent air transfer grille








