• Fire grille is designed for fireproof doors , it can meets the demand of ventilation in daily life and provide and excellent fire protection through rapid expansion by itself in a fire,thereby prevent passing fire and hot gases.
• Suitable for fire resisting doorsets & compartment walls for up to 60 minute fire resistance.
• Fire grille size: Minimum unit is 150mm*150mm, Horizontal and vertical overlapping,
thickness 40mm . standard set is 1 grille+2 face plate