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Delta Duct FD 4
Product Brand
Product Details
Delta-flex DF-FD4 is insulated flexible duct with outer jacket as metalized PET laminated over clear polyester, middle layer is of Good quality fiber glass insulation & inner core is double layer of metalized PET & clear polyester permanently bonded with flame retardant bonding adhesive with coated steel spring helix.
Specification
- Diameter : 4” to 20”
- Insulation Density : (16, 24, 32) kg/m3
- Available Insulation Thickness : 25 mm
- Length : 25 feets
- Maximum Velocity : 5000 FPM (25.5 m/s)
- Maximum Positive Pressure : 10” W.C. (2.5 KPa)
- Maximum Negative Pressure : ½” W.C. (0.12 KPa)
- Insulation R Value : 4.2 or 6 (F-hr/BTU)
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