I've been asked to replace an Xpelair CF20 extractor fan which has been recessed into the ceiling. I've had a rummage and managed to find a CF20TX in my store. Seems to be very similar looking albeit with rounder corners. Does anyone know if it can be used as a direct replacement or will I be left trying to fit a round peg into a square hole? 
On the Xpelair website it says "Retrofittable to previous Xpelair Premier fan ranges" - would it be safe to assume this includes the recessed fitting option?
On the Xpelair website it says "Retrofittable to previous Xpelair Premier fan ranges" - would it be safe to assume this includes the recessed fitting option?
