UL-181 › Historical Revision Information
Standard for Factory-Made Air Ducts and Air Connectors
Standard for Factory-Made Air Ducts and Air Connectors
To find similar documents by Federal Supply Class Code:
FSC 4130 (Refrigeration and Air Conditioning Components)
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Document Number
UL-181
Revision Level
CHANGE 12/21
Status
Current
Publication Date
Dec. 29, 2021