An intumescent air transfer grille measuring 150 x 300mm, designed for installation in fire-rated doors and partitions where a larger ventilation aperture is required without compromising fire compartmentation. The intumescent material expands under heat to seal the grille opening, maintaining the fire integrity of the door for the rated period while allowing normal air transfer during everyday use.

Supplied as a single grille.

• Type: Intumescent air transfer grille
• Dimensions: 150 x 300mm
• Application: Fire-rated doors and partitions

Also available in 150x150mm, 300x300mm, 112x225mm, and 225x225mm. For louvre face grilles, see the Intumescent Louvre Grille 150x300mm Silver. Browse the full ventilation range.