Fiberglass Insulated Flex Duct
Standard fiberglass wool insulated flexible duct with aluminum foil inner core and metalized polyester vapor barrier. 25mm (1") fiberglass insulation at 16 kg/m³ density. Industry standard for residential HVAC.
- Fiberglass wool insulation (16 kg/m³)
- 25mm (1") insulation thickness
- Aluminum foil inner duct
- Metalized polyester vapor barrier
- R4.2 thermal performance
- Temperature range: -20°C to +120°C
Technical Specifications
| Inner Duct | Aluminum foil + steel wire helix |
| Insulation | Fiberglass wool, 16 kg/m³ |
| Insulation Thickness | 25mm (1") |
| Outer Jacket | Metalized polyester vapor barrier |
| R-Value | R4.2 |
| Diameter Range | 4" – 20" (100mm – 500mm) |
| Temperature Range | -20°C to +120°C (-4°F to +248°F) |
| Standard Length | 25 ft (7.6m) |
Get a quote for Fiberglass Insulated Flex Duct
Fill in your requirements. We respond within 24 hours on business days.
More Insulated Ducts
Polyester Insulated Flex Duct
Polyester wool insulated flexible duct — a fiberglass-free alternative. Non-irritant polyester insulation at 200 g/m² density. Ideal for environments where fiberglass particles are a concern.
R6 / R8 Insulated Flex Duct
High-performance insulated flexible ducts rated R6 (40mm) and R8 (80mm). Designed for energy code compliance in attics, crawl spaces, and unconditioned areas where maximum thermal performance is required.
Soundproof Insulated Duct (Acoustic Duct Insulation)
Acoustically lined insulated flexible duct with acoustic duct insulation and non-woven fabric inner core for superior noise reduction. Reduces HVAC system noise by up to 25 dB. Also serves as insulated exhaust duct for quiet ventilation. Perfect for bedrooms, offices, and recording studios.