.11 Fuel Storage, Location, and Connections.

All piping from exchangeable fuel storage tanks or cylinders to the mobile homes shall be of copper or other approved metallic tubing and shall be permanently installed and securely fastened in place. All fuel storage tanks or cylinders shall be securely fastened in place and may not be located inside or beneath the mobile home or less than 5 feet from any mobile home exit. Any exception to the above regulation shall bear an approved label acceptable to the State Fire Marshal and the National Board of Fire Underwriters.