Maybe worth asking the British Hovercraft company who make their fan guards.  They maybe able to supply their manufacturer's details or get them made for you.

Hi All,


I'm looking to get two fan guards made for the new HoverAid River Rover we are building - I have detailed drawings for what we need (essentially 1200mm dia 50mm spaced grid in 3mm/10SWG with a 265 dome projection). Anyone got any leads for who could make this for us? I've attached a drawing - would be happy to have this in dip coated steel rather than stainless.


Cheers
Andy Mayo