Consists of metal plates clad in intumescent and covered in foil, with a wire mesh frontage. In the event that a fire occurs, the intumescent will expand to seal the grille, preventing fire and smoke from spreading. Intumescent block grilles are suitable for use in ducting pipes.
A metal framed intumescent block grille, available in sizes up 600mm x 600mm
Standard delivery cost is £12.50
Subtotal over £250 delivery is FREE
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The block grille is designed to fit into a square or rectangular hole with a tolerance of 2-3mm. The grille should be placed centrally within the aperture and sealed around the edges using Firesure® intumescent acrylic sealant and mechanically secured using screws, or crews and angle strips