UL 181A:4ED 2013-01-08

FOREWORD
INTRODUCTION
1 Scope
2 General
PART I - PRESSURE SENSITIVE ALUMINIUM TAPES FOR USE WITH
         RIGID FIBERGLASS AIR DUCTS
Construction
3 Materials
Performance
4 Tensile strength test
5 Peel adhesion test at 180 degree angle
6 Shear adhesion test
7 Peel adhesion test at 20 degree angle
8 Surface burning characteristics test
9 Mold growth and humidity test
10 Temperature/pressure cycling test
11 Burning test
Manufacturing and production tests
12 General
Marking
13 General
PART II - HEAT ACTIVATED ALUMINIUM TAPES FOR USE WITH
          RIGID FIBERGLASS AIR DUCTS
Construction
14 Materials
Performance
15 Tensile strength test
16 Peak adhesion test at 180 degree angle
17 Shear adhesion test
18 Peak adhesion test at 20 degree angle
19 Surface burning characteristics test
20 Mold growth and humidity test
21 Temperature/pressure cycling test
22 Burning test
Manufacturing and production tests
23 General
Marking
24 General
PART III - MASTIC CLOSURE SYSTEMS FOR USE WITH RIGID
           FIBERGLASS AIR DUCTS
CONSTRUCTION
25 Materials
26 Glossary
27 Tensile joint strength test
28 Adhesion test
29 Shear adhesion test
30 Freeze/thaw test
31 Surface burning characteristics test
32 Mold growth test
33 Temperature/pressure cycling test
34 Burning test
MANUFACTURING AND PRODUCTION TESTS
35 General
MARKING
36 General
37 Installation instructions
SUPPLEMENT A - FOLLOW-UP INSPECTION INSTRUCTIONS
GENERAL
SA1 Scope
SA2 Glossary
RESPONSIBILITIES OF THE MANUFACTURER
SA3 General
REQUIREMENTS FOR FACTORY TESTS
SA4 General
PART I - PRESSURE-SENSITIVE ALUMINIUM TAPES
SA5 Application rate of adhesive
SA6 Percent solids
SA7 Thickness determination of foil
SA8 Weight of foil
SA9 Weight per gallon of adhesive
PART II - HEAT-ACTIVATED ALUMINIUM TAPES
SA10 Thickness determination of foil
SA11 Weight per unit area of finished product
SA12 Thread count of scrim
SA13 Percent ash of scrim
RESPONSIBILITIES OF THE FIELD REPRESENTATIVE
SA14 General
INSTRUCTIONS FOR INSPECTION OF THE PRODUCT
SA15 General requirements
SA16 Special requirements
INSTRUCTIONS FOR FOLLOW-UP TESTS AT CERTIFICATION
  ORGANIZATION
SA17 Instructions for sample pickup
SA18 Qualitative infrared analysis
SA19 Quantitative analysis for fire retardant

This revision of ANSI/UL 181A is being issued to update the title page to reflect reaffirmation of ANSI approval.

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.