Knauf Air Duct Board-M

• Submittal
• MSDS
• Guide Specifications

Description

Application

Features

• Hydroshield Technology mat facing.
• Low thermal conductivity of 0.23 at 75°F (24°C) mean temperature.
• Low installed cost, insulated duct system.
• Excellent acoustical characteristics.
• Assured insulation thickness, shiplap joints, and FSK vapor retarder.
• If necessary, can be cleaned in accordance with NAIMA's “Cleaning Fibrous Glass Insulated Air Duct Systems Recommended Practices.”
• Knauf Air Duct Board systems meet the fire and smoke safety regulations of most federal, state, and local building codes.

Benefits

• Moisture hold out properties that significantly reduce the opportunity for moisture to penetrate the air stream surface.
• Airstream surface is significantly more resistant to abuse than coated duct board products.
• Does not support growth of mold, fungi, or bacteria.
• Airstream surface is 20% less porous to air than coated duct board products.
• Fabrication in shop environment lowers field installation time.
• One craft required to fabricate and install system.
• Minimum capital investment for fabrication equipment.
• Portability allows for assembly or fabrication at job site.
• Lower installation cost than with duct wrap and duct liner.
• Quiet, efficient air delivery.
• Reduces noise generated by air turbulence and mechanical equipment.
• Eliminates “booming” and “cracking” sounds caused by sheet metal duct contraction and expansion.
• Condensation control.
• Strong thermal performance.
• Code compliance.

Specification Compliance

In U.S.:

• ASTM C 1136; Type II (FSK facing)
• ASTM D 5116
• ASTM G 21, G 22
• BOCA
• CABO
• California Title 24
• Corps of Engineers Guide Specifications
• ICBO
• International Mechanical Code
• NFPA 90A and 90B
• SBCCI
• State of Alaska IAQ Specifications
• State of Washington IAQ Specifications
• UL 181; Class 1

In Canada:

• CAN/ULC S102-M88
• CAN/CGSB 51-GP-52M (facing)
• CAN/CGSB 51.10-92
• ULC Issue 869C; Class 1

Technical Data

Surface Burning Characteristics

• UL/ULC listed.
• Does not exceed 25 Flame Spread, 50 Smoke Developed when tested in accordance with ASTM E 84, CAN/ULC S102-M88, NFPA 255, and UL 723.

Flexural Rigidity

• Available in two stiffness values: EI-475 and EI-800.
• Flexural rigidity (EI) is the product of Young's modulus of elasticity (E) and moment of inertia (I) as determined in accordance with NAIMA AHS-100-74.

Service Temperature (ASTM C 411)

• Up to 250°F (121°C).

Air Velocity (UL 181)

• Maximum 5000 fpm (1524 mpm).
• Tested to 12,500 fpm (3810 mpm).

Internal Static Pressure (UL 181)

• Maximum ±2" water (498 pascals [Pa]).

Water Vapor Permeance (ASTM E 96)

• Less than 0.02 perms.

Water Vapor Sorption (ASTM C 1104)

• Less than 3% by weight.

Microbial Growth (ASTM G 21, G 22, UL 181)

• Does not promote or support the growth of mold, fungi, or bacteria.
• Airstream surface mat-facing is treated with an EPA-registered anti-microbial agent to aid in the prevention of fungal and bacterial growth.

Airstream Surface Abuse (K-103)

• Average of 370 seconds to surface penetration.

Application and Specification Guidelines

Storage

• Protect stored duct board from water damage, construction damage, and other abuse.
• If stored outside, proper protection from weather conditions should be provided.

Application

• Duct shall be fabricated and installed in strict accordance with NAIMA's “Fibrous Glass Duct Construction Standard,” “Residential Standard,” “1¹/_²" Fabrication Manual,” or Knauf Insulation “Air Duct Fabrication Manual,” and in accordance with the conditions of UL 181 listing. Duct systems shall have all transverse joints, longitudinal seams, and duct wall penetrations sealed using 3" (76 mm) wide glass fabric and mastic, 2" (51 mm) minimum width heat-sealable tape, or 2" (51 mm) minimum width pressure-sensitive tape with acrylic adhesive. Rubber based adhesives are not approved.
• Only UL 181-A listed and labeled products shall be used for closure systems. A listing of approved closure products is available from you local Knauf sales representative.
  
  PRESSURE-SENSITIVE TAPES: Only those tapes listed under and imprinted with designation UL 181 A-P and registered with UL.
  HEAT-SEALABLE TAPES: Only those tapes listed under and imprinted with designation UL 181 A-H and registered with UL.
  MASTICS: Mastic systems listed and registered with UL and carrying the designation UL 181 A-M used in conjunction with a 3" (76 mm) wide glass fabric.

Procedures

Closure

Reinforcements

Notes