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D.C. Mun. Regs. tit. 12-D, ch. 5 – Chimneys and Vents | Midpage
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District of Columbia Municipal Regulations
Title 12
12-D
Chapter 12-D5
D.C. Mun. Regs. tit. 12-D, ch. 5
Chimneys and Vents
District of Columbia, Office of the Secretary
12-D505
Direct-vent, Integral Vent, Mechanical Vent and Ventilation/exhaust Hood Venting