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Fire Stop Plate Diameter Size:
180mm diameter (for 5″/125mm internal and 7″/180mm external diameter of twin wall flue)*
200mm diameter (for 6″/150mm internal and 8″/200mm external diameter of twin wall flue)*
230mm diameter (for 7″/180mm internal and 9″/230mm external diameter of twin wall flue)*
250mm diameter (for 8″/200mm internal and 10″/250mm external diameter of twin wall flue)*
*Diameters quoted for our twin wall flues based on 25mm of insulation thickness.
The Firestop is used internally where the flue run passes through a slabbed or joisted area. The Firestop is designed to allow for the 50mm required clearance between the flue and combustibles.
