The Webasto burner in the Hydro Hot has all metric hardware. I also believe hardware on the wiper arms was metric.
This day and age a combination of metric and inch is almost always required. Even my Harley has a few metric fastners. I was told I would find no metric on my stock Harley (wrong).
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Wayne & Kathy
05 Alpine 40FDQS #75330 Towing 24' car hauler, 2012 Spyder, 2003 Harley FatBoy
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