UL 181A
Standard for Closure Systems for Use With Rigid Air Ducts

DETAILS
Edition Number:4SCC Approved:--
Edition Date:2013-01-08DOD Approved: --
Price Code:DANSI Approved: 2017-03-22
Type:ulstd

  • SCOPE

    1 Scope

    1.1 These requirements cover closure systems for use with factory-made rigid air ducts or air connectors complying with the Standard for Factory-Made Air Ducts and Air Connectors, UL 181. Closure systems consist of pressure sensitive tapes, heat-activated tapes, and mastics.

    1.2 Closure systems are intended for use with rigid air ducts installed in accordance with the International Mechanical Code (IMC), International Residential Code (IRC), International Energy Conservation Code (IECC), Uniform Mechanical Code (UMC), Standard for the Installation of Air Conditioning and Ventilating Systems, NFPA 90A, and the Standard for the Installation of Warm Air Heating and Air Conditioning Systems, NFPA 90B; and/or other Model codes.

  • TABLE OF CONTENTS
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    • Cover
    • Transmittal
    • Table of Contents
      • Body
        • Part
          • INTRODUCTION
          • 1 Scope
          • 2 Components
          • 3 Units of Measurement
          • 4 Undated References
          • 5 Referenced Standards
        • PART I – PRESSURE SENSITIVE ALUMINUM TAPES FOR USE WITH RIGID FIBERGLASS AIR DUCTS
          • CONSTRUCTION
          • 6 Materials
          • PERFORMANCE
          • 7 Tensile Strength Test
          • 8 Peel Adhesion Test at 180 Degree Angle
          • 9 Shear Adhesion Test
          • 10 Peel Adhesion Test at 20 Degree Angle
          • 11 Surface Burning Characteristics Test
          • 12 Mold Growth and Humidity Test
          • 13 Temperature/Pressure Cycling Test
          • 14 Burning Test
          • MARKING
          • 15 General
        • PART II – HEAT ACTIVATED ALUMINUM TAPES FOR USE WITH RIGID FIBERGLASS AIR DUCTS
          • CONSTRUCTION
          • 16 Materials
          • PERFORMANCE
          • 17 Tensile Strength Test
          • 18 Peak Adhesion Test at 180 Degree Angle
          • 19 Shear Adhesion Test
          • 20 Peak Adhesion Test at 20 Degree Angle
          • 21 Surface Burning Characteristics Test
          • 22 Mold Growth and Humidity Test
          • 23 Temperature/Pressure Cycling Test
          • 24 Burning Test
          • MARKING
          • 25 General
        • PART III – MASTIC CLOSURE SYSTEMS FOR USE WITH RIGID FIBERGLASS AIR DUCTS
          • CONSTRUCTION
          • 26 Materials
          • 27 Glossary
          • PERFORMANCE
          • 28 Tensile Joint Strength Test
          • 29 Adhesion Test
          • 30 Shear Adhesion Test
          • 31 Freeze/Thaw Test
          • 32 Surface Burning Characteristics Test
          • 33 Mold Growth Test
          • 34 Temperature/Pressure Cycling Test
          • 35 Burning Test
          • MARKING
          • 36 General
          • INSTRUCTIONS
          • 37 Installation Instructions