Specification

Insulated Flexible Air Duct for Superior Indoor Air Quality
APPLICATIONS and ENGINEERING
Nominal Inside Diameter (inches):
Length (feet):
Inside Bend Radius (inches):
Operating Pressure (inches water column):
Operating Temperature Range (°F):
Velocity (feet per minute):
R-Value:
Surface Burning Characteristics:
Vapor Transmission Rating
(U.S. Perm.):
Positive = 16 inches (4-10 in. ID) 10 inches (12-20 in. ID) Negative = 2 inches
Minimum = -20 Maximum = +250
6000
8.0 per ASTM C-518
Max. Flame Spread = 25 Max. Smoke Developed = 50
0.05
Suggested Speci cation
Flexible duct for connections between __________
___________ and ______________________ shall
be EverClean air duct rated for a maximum pressure
of 16” (4-10 in. ID) or 10” (12-20 in. ID) water column
positive and 2” water column maximum negative
pressure and 6000 FPM maximum velocity and Listed
by Underwriters Laboratories, Inc. under UL Standard
181 as a Class I air duct and complying will NFPA
Standards 90A and 90B. EverClean™ air duct shall
be factory made and composed of: an inner duct of
woven and coated  berglass providing an air seal
and permanently bonded to coated steel wire helix,
a  berglass insulating blanket, and low permeability
outer vapor barrier of  berglass-reinforced metallized
 lm laminate.
Lifetime Warranty
Therma ex® warrants that
EverClean insulated ducting will
be free from defects in materials
and factory workmanship for
the lifetime of the original
homeowner. This warranty
covers the  exible duct,
materials and labor. This warranty applies only to ducts
properly installed in accordance to published, written
installation instructions and under conditions speci ed
in published performance data. Therma ex shall not be
liable to buyer or any third party for any special, secondary,
incidental or consequential damages, however they arise.
The EverClean  exible duct has
been awarded GREENGUARD
Certi cation by the GREENGUARD
Environmental Institute (GEI).
When you’re a Builder Alliance®
Program member you receive
additional allowances from
Owens Corning for the use
of the  berglass material in
the EverClean product. For
more information please go to
www.owenscorning.com.
FLEXIBLE DUCT
GREENGUARD Certi ed
for Superior Indoor Air Quality
www.therma ex.net
1-800-459-4822
Coated,
woven
 berglass
liner
Coated spring
steel wire helix
Owens
Corning
 berglass
insulation
Fiberglass-
reinforced,
metallized  lm
vapor barrier
4 5 6 7 8 9 10 12 14 16 18 20
25 25 25 25 25 25 25 25 25 25 25 25
4 5 6 7 8 9 10 12 14 16 18 20
e
THE PINK PANTHER
TM
& ©1964-2008 Metro-Goldwyn-Mayer Studios Inc. All Rights Reserved. The color PINK is a registered trademark of Owens Corning.
The GREENGUARD INDOOR AIR QUALITY CERTIFIED Mark is a registered certi cation mark used under license through the GREENGUARD Environmental Institute.
Rev. 2-10