Washable ventilation tubes

[Jamer]

Anyone know who supplies the washable ventilation tubes as advocated by, I believe, a buildings consultant from N Wales? He was quoted in the Dairy Farmer magazine a few months back. Can't find anything online, thought someone on here will know who/what I'm on about.

 

[Blue.]

Anyone know who supplies the washable ventilation tubes as advocated by, I believe, a buildings consultant from N Wales? He was quoted in the Dairy Farmer magazine a few months back. Can't find anything online, thought someone on here will know who/what I'm on about.

This type of thing?

https://www.proctorgroup.com/images/Agriculture/AircareSystem.pdf

 

[Jamer]

Yeah, got a Proctor already and nothing wrong with it. The article mentioned a type being washable which caught my eye and I am looking to put another one in.