Mich. Admin. Code R. 408.4265 - Minimum distance required between boiler and floor
Rule 265. Boilers other than cast iron of the wet-bottom type having an external width of over 36 inches shall have not less than 12 inches between the bottom of the boiler and the floor line, with access for inspection. When the width is 36 inches or less, the distance between the bottom of the boiler and the floor line shall be not less than 6 inches and when any part of the wet bottom is not farther from an outer edge than 12 inches, it shall be not less than 4 inches.
State regulations are updated quarterly; we currently have two versions available. Below is a comparison between our most recent version and the prior quarterly release. More comparison features will be added as we have more versions to compare.