§ 8-177. Clearance between appliances and woodwork or wooden lath and plaster partitions.
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No gas burning appliance or any portion thereof, coming in direct contact with gas
flames or hot gases, shall be placed less than 18 inches from any woodwork or wooden
lath and plaster partition, unless metal shields are provided, securely attached and
so placed as to preserve an air space of not less than one inch between such shield
and partition. Where such shields are provided, the 18 inch clearance specified may
be reduced to nine inches.