Wash. Admin. Code § 296-150V-1420
A label must be permanently attached on the outside of the exterior wall of the conversion vendor unit or medical unit adjacent to the gas supply connection which provides the following information:
[Statutory Authority: Chapter 43.22 RCW. WSR 99-18-069, § 296-150V-1420, filed 8/31/99, effective 10/1/99.]