On 25/01/2018 22:27, Tricky Dicky wrote:
Use pipe collars, you can make the exit from the boxing a generous fit around the pipe to prevent chaffing and use the collars to cover the exit point. They can be cut down if the pipe runs close to the wall.

https://www.screwfix.com/p/talon-15m...-10-pack/18649

Richard

I've used those in bathrooms before, but I don't think they'd look right
in regular rooms. Also, they're 15mm pipes on 30mm centres, coming
through a rectangular cut-out that's about 55x32.