Sefton-EP91 Posted February 6, 2014 Share Posted February 6, 2014 What's peoples suggestions on the internal diameter of hose used? How wide does the internal diameter need to be? I dont want it to be too small therefore making it harder to breathe.Thanks. Quote Link to post Share on other sites
Starbuck Posted February 6, 2014 Share Posted February 6, 2014 As big as the hole already there I'd say. An8 is sufficient, that what mine was. Quote Link to post Share on other sites
Sefton-EP91 Posted March 6, 2014 Author Share Posted March 6, 2014 Ok thanks mate Quote Link to post Share on other sites
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