Flexible Air Duct
Section 15815
Metaflex Division
Professional Duct Systems, Inc.
(888) 685-3539 |
|
ACOUSTICAL AIR DUCT
V-450-S-dB
Description
Acoustical, insulated, Metalflex® air duct for low pressure take-offs where fire safety is important.
Inner liner is specially perforated to attenuate sound. Features reinforced, high
performance metalized vapor barrier with an extremely low, .05, permeance rating. Comes in
8 foot sections, not compressed, with a factory installed collar on one end, other end
plain. High quality materials are identical to V-250-S-UL except inner core is perforated.
Features
• High Insertion Loss for octave bands 2 to 8.
• Perforated inner core is 100% aluminum.
• Thermal Efficiency -
C factor calculated at 75° F mean = .173
R-Value = 5.79 Avg. (ADC FD72-R1)
4.20 Avg. (ASTM C-518)
• Metalized vapor barrier with low .05 Perm rating.
• High quality materials for long term durability.
PERFORMANCE STANDARDS
Maximum Velocity: – 2500 FPM
Maximum Operating Pressures:
POSITIVE AND NEGATIVE -
6" - 20" Diameters – ± 2" W.G.
Operating Temperature Range:
-20° through + 250° F.
