Publisher : UL

UL Subject 181 PDF

Standard for Factory-Made Air Ducts and Air Connectors (Bulletin, 7/21/1998)

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UL Subject 181 PDF

Standard for Factory-Made Air Ducts and Air Connectors (Bulletin, 4/17/1998)

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UL Subject 181 PDF

Standard for Factory-Made Air Ducts and Air Connectors (Bulletin, 11/22/2002)

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UL Subject 181 PDF

Standard for Factory-Made Air Ducts and Air Connectors (Bulletin, 3/4/1998)

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UL Subject 181A PDF

Standard for Closure Systems for Use With Rigid Air Ducts (CSDS Proposal, 2/3/2017)

Document status: Active

UL Subject 181A PDF

Standard for Closure Systems for Use With Rigid Air Ducts and Air Connectors (Bulletin, 11/22/2002)

Document status: Active

UL Subject 181A PDF

Standard for Closure Systems for Use with Rigid Air Ducts and Air Connectors (Bulletin, 3/4/1998)

Document status: Active

UL Subject 181A PDF

Standard for Closure Systems for Use with Rigid Air Ducts and Air Connectors (Bulletin, 7/21/1998)

Document status: Active

UL Subject 181B PDF

Standard for Closure Systems for Use With Flexible Air Ducts and Air Connectors (CSDS Proposal, 2/3/2017)

Document status: Active

UL Subject 181B PDF

Standard for Closure Systems for Use With Flexible Air Ducts and Air Connectors (Bulletin, 11/22/2002)

Document status: Active