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Johns Manville Microlite fsk Duct Wrap



Johns Manville MicroLite FSK FIberglass Duct Wrap


Microlite® FSK Formaldehyde-free™ duct wrap offers superior thermal performance and condensation control in a lightweight, blanket-type insulation with an FSK facing. It is recommended for HVAC system exteriors or surfaces where design parameters prohibit the use of liner or board. Installing contractors prefer Microlite's binder for many reasons, including improved handling, easier cutting and less dust.  JM's manufacturing process ensures consistency during production, which results in reliable product quality.


DESCRIPTION

Microlite® FSK Formaldehyde-free™ duct wrap insulation is a lightweight, highly resilient, blanket-type thermal insulation. The insulation blanket is manufactured from rotary-process fiberglass bonded with a formaldehyde-free resin.

AVAILABLE FORMS

Microlite Formaldehyde-free™ insulation is available in a variety of densities, thicknesses and roll lengths. It is supplied with an FSK (foil-scrim-kraft) vapor barrier facing to meet installed performance requirements, with a 2" stapling tab. Microlite FSK is 48” wide.

USES

Microlite insulation is recommended as thermal insulation for the exterior of HVAC systems or other spaces or surfaces where temperature control is required.


GENERAL PROPERTIES

Temperature (max.) – ASTM C411            250°F 
Water vapor sorption – ASTM C1104      <5% by weight
Corrosivity with steel – ASTM C665         Does not accelerate
Fungi resistance – ASTM C1338               Does not breed or promote

R-VALUES PER THICKNESS (TYPE 75)

R-4.2               1-1/2"  (Standard)
R-6.0               2-1/8"  (2" Wrap)
R-8.0                  3"      (3" Wrap)
R-12                4-2/5"  (4.4" Wrap)

SPECIFICATION COMPLIANCE

ASTM C1290                                    Type 75, 100, & 150
ASTM C553*
Type I, Type II                                    Type 75 & 100
Type I, Type II, Type III                      Type 150 *
For faced material: 250°F (121°C) maximum temperature.
ASTM C1136s†
Type II                                                 FSK Facing †
Replaces HH-B-100B, Type II.
Canada: CGSB 51-GP-11M
NYC MEA 40-75-M


JOHNS MANVILLE MICROLITE FSK FIBERGLASS DUCT WRAP DATASHEET