18-28-603.5.2 Flexible air connectors.
   Flexible air connectors, both metallic and nonmetallic, shall be tested in accordance with UL 181 Such connectors shall be listed and labeled as Class 0 or Class I flexible air connectors and shall be installed in accordance with the provisions of this Chapter 18-28.
(Amend Coun. J. 11-9-16, p. 36266, § 36)