Insulated Rectangular Duct
Product features:
- Made of galvanized steel sheet, mineral wool filling
- Standard insulation thickness: 80 mm (other thicknesses available upon request)
- Option to select wool type based on parameters (e.g., thermal conductivity coefficient)
- Leakage class: A (standard) or A/B for enhanced sealing performance
- Precise connection of internal frames ensures high tightness
- Corrosion resistance due to galvanized coating
- Elements can be manufactured in any custom dimensions
Duct Tightness Classes
| Duct tightness class | Leakage indicator limit value (fmax) m³·S⁻¹·m⁻² |
Static pressure limit value (ps) [Pa] | |||
|---|---|---|---|---|---|
| Negative pressure in a given class | Positive pressure class 1 | Positive pressure class 2 | Positive pressure class 3 | ||
| A | 0,027 × ptest, 0,65 × 10⁻³ | 200 | 400 | – | – |
| B | 0,009 × ptest, 0,65 × 10⁻³ | 500 | 400 | 1000 | 2000 |
Pre-insulated ducts and fittings are a solution providing effective thermal and acoustic insulation in ventilation systems. Made of galvanized sheet metal and filled with mineral wool, they guarantee durability and high tightness (class A or B). Standard insulation is 80 mm thick, and the possibility of individual selection of wool parameters allows the product to be adapted to technical and energy requirements.
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