The fan is the mechanism that injects fresh air in to the combustion chamber, allowing the gas to be burnt correctly. It also extracts the remaining burnt gas after the combustion process is complete.
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Technical Specifications
Toilet Cistern CapacityFTW--Supplier Part Number432828Brand NameGlow-Worm
Reviews
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Glow-Worm 432828 Fan Assembly Express/Swiftflow 75/80 Square Outlet