Discuss What’s difference between ffd and fsd? in the Central Heating Forum area at PlumbersForums.net
According to Wikipedia there is no difference. It's just FSD aka FFD.What’s difference between fsd and ffd?
Do you have any examples of ffd and fsd? Like which appliances you’d find them in?According to Wikipedia there is no difference. It's just FSD aka FFD.
Reply to What’s difference between ffd and fsd? in the Central Heating Forum area at PlumbersForums.net
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