Mark flue gas fan GS37G4: original Mark spare part, type: Flue gas fan, GS37G4. Application: Warm air heating (GNSD 22). Manufacturer number: 3103275; Instalpunt article number: 8881035.
According to the Mark parts lists, this part fits 27 models, including Mark GNSD 22, Mark GNSD 25 and Mark GNSD 27. The full list is under “Fits”.
This item is in stock and usually arrives within 3–5 working days.
Check the rating plate of your appliance before ordering; if in doubt, ask the manufacturer or your installer. Work on gas-carrying parts must be carried out by a qualified gas engineer.




