// CODE SNIPPET
603.6.1 Flexible Air Ducts
Related Code Sections
603.6.1 Duct Systems, Flexible Air Ducts
Flexible air ducts, both metallic and nonmetallic, shall be tested in accordance with UL 181. Such ducts shall be listed and labeled as Class 0 ...
Mechanical Code 2018 of Maryland > 6 Duct Systems > 603 Duct Construction and Installation > 603.6 Flexible Air Ducts and Flexible Air Connectors > 603.6.1 Flexible Air Ducts
603.6.2.1 Duct Systems, Connector Length
Flexible air connectors shall be limited in length to 14 feet (4267 mm) ...
Mechanical Code 2018 of Maryland > 6 Duct Systems > 603 Duct Construction and Installation > 603.6 Flexible Air Ducts and Flexible Air Connectors > 603.6.2 Flexible Air Connectors > 603.6.2.1 Connector Length
603.6.2.2 Duct Systems, Connector Penetration Limitations
Flexible air connectors shall not pass through any wall, floor or ceiling ...
Mechanical Code 2018 of Maryland > 6 Duct Systems > 603 Duct Construction and Installation > 603.6 Flexible Air Ducts and Flexible Air Connectors > 603.6.2 Flexible Air Connectors > 603.6.2.2 Connector Penetration Limitations
607.7 Duct Systems, Flexible Ducts and Air Connectors
Flexible ducts and air connectors shall not pass through any fire-resistance-rated assembly ...
Mechanical Code 2018 of Maryland > 6 Duct Systems > 607 Duct and Transfer Openings > 607.7 Flexible Ducts and Air Connectors
717.7 Fire and Smoke Protection Features, Flexible Ducts and Air Connectors
Flexible ducts and air connectors shall not pass through any fire-resistance-rated assembly. Flexible air connectors shall not pass through any wall ...
Building Code 2018 of Maryland > 7 Fire and Smoke Protection Features > 717 Ducts and Air Transfer Openings > 717.7 Flexible Ducts and Air Connectors