Section 408.4260. Furnace access openings.

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A firedoor or other access opening, not less than 11 x 15 inches or 10 x 16 inches or 15 inches in diameter, shall be provided for the furnace of an internally fired boiler other than cast-iron which the least furnace dimension is 28 inches or over.

History: 1979 AC.

                    
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