Product Description
PHYSICAL DESCRIPTION
MHP-25 (25’ length) flexible duct is constructed with a spring steel wire helix, encapsulated in a 2-ply, air-tight inner core. Fiberglass insulation choices of R4.2, R6 & R8 encompass the core and a unique metalized, reinforced vapor barrier surrounds the entire duct.
PRODUCT DATA
Diameters: 4”,5”,6”,7”,8”,9”,10”,12”,14”,16”,18”,20”,22”
* 22” available in MHP25R6 only
Length: 25 feet
Packaging: 1 section per poly-bag or carton. To meet thermal properties, packaging complies with recommended 12:1 or less compression ratio.
Vapor Barrier: 2-Ply Reinforced Metalized Polyester End Treatments: Raw Ended
Inner Core: Air Tight 2-Ply Black Pigmented Polyester
PERFORMANCE DATA
Thermal Value: R4.2, R6 & R8 Classified by Underwriters Laboratories, Inc. and bears the ADC Thermal Certification Mark.
Maximum Positive Pressure: 6” W.G. (4” – 12”) 4” W.G. (14” – 22”) determined per ADC Test FD-72R1 at 180° F temperatures in a 90° elbow. Maximum Negative Pressure: 1” W.G. (4” – 10”) 1⁄2” W.G. (12” – 22”)
Vapor Barrier: Flexible air ducts are for indoor applications and should not be exposed to direct ultraviolet light.
Maximum Velocity: 5,000 FPM
Operating Temperatures: 0 - 200° F
Permeance: (Vapor – Barrier) 0.01 US Perms pe
