Rubber sealed metal ducting does not need tape or sealant and is more airtight than the standard metal ducting.
Call us 020 8463 9696
Bathroom zones are just a way of telling which extractor fan you can install in a specific place.
For information on our available accoustic vent ranges please contact us.
A quick link showing a small part of our range is available here: http://www.i-sells.co.uk/rytons-acoustic-vents
About us & why are we called i-sells