hi oven/hob is 600mm wide. if i fit a 600x750 splashback the distance from top of splashback to ceiling is only 510mm. smallest height chimney hood i can find is 646mm total -thats the chimney plus the glass hood. could i instead fit a 600x600 splashback or is there a building reg for distance to hood. if not i could cut the splashback to fit which may give a 600x614 size. or maybe a smaller chimney hood of anyone knows where??? has to be a chimney hood rather integrated hood. cheers for help and happy NY!