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I have 100mm ceiling fans that duct out through the roof. I intend to fit condensation traps. TS have some in stock but they don't fit the duct collars of the fans which I've measured at 100mm o/d. The TS Condensation Traps have too large an i/d which has me baffled.
Can anyone advise how these traps are meant to be fitted please?
Can anyone advise how these traps are meant to be fitted please?