A 60-minute intumescent block for the Pyrogrille 100 air transfer vent, measuring 300 x 300 x 25mm in black. The intumescent block expands under heat to seal the vent opening in the event of a fire, maintaining the fire integrity of the door or partition for up to 60 minutes while allowing normal air transfer during everyday use. Essential for fire-rated door installations where ventilation and fire compartmentation are both required.

Supplied as a single block.

• Type: Intumescent block, 60-minute fire rating
• Compatible with: Pyrogrille 100 Air Transfer Vent
• Dimensions: 300 x 300 x 25mm
• Colour: Black

For the air transfer grilles themselves, see the Intumescent Air Transfer Grille 300x300mm and the Intumescent Louvre Grille 300x300mm Silver. Browse the full ventilation range.