An intumescent air transfer grille measuring 225 x 225mm, designed for installation in fire-rated doors and partitions where a mid-size ventilation aperture is required. The square format suits both portrait and landscape door configurations. 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: 225 x 225mm
• Application: Fire-rated doors and partitions

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