057 86 64506
laoisstone@gmail.comFire stop size:
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)*
*Diameters quoted for our twin wall flues based on 25mm of insulation thickness.
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