Extractor fan question (Silent 100)

[robsparx]

I'm looking at extractor fans to install above a shower in a house I'm working in.

Looking at these Silent 100 CRZ fans, which have an extraction rate of approx 100m cubed/hour. What would be the maximum length of duct that I should fit on a fan of this power?

I've installed 3m of duct to the outside vent in preparation but it's not quite going to be long enough

 

[IQ Electrical]

Is it flexi or rigid?

You're better ringing the manufacturer, they will have this data to hand.

 

[robsparx]

Flexi.

Was thinking of installing an in line with a better extraction rate, but even above the ceiling I think it'll be more noisy than these silent ones.

I'll give them a ring.

 

[IQ Electrical]

Flexi.

Was thinking of installing an in line with a better extraction rate, but even above the ceiling I think it'll be more noisy than these silent ones.

I'll give them a ring.

Yes, in-line is much better plus you can hide the isolator in the loft!