Round Tee with Rectangular Branch (for Grille)
Product features:
- Made of Z275 DX51 galvanized steel sheet, in accordance with PN-EN 1505 and PN-EN 1507 standards
- Available in leakage classes A and B (acrylic seals on corners, seams, and frames)
- Connections are made using a frame of profiles and ventilation corners compliant with standards
- Sheet thickness and frame size adapted to duct dimensions
- Rectangular duct module: standard length L = 1500 mm
- Fittings with a surface area below 1 m² are calculated as elements with a surface area of 1 m² (according to DIN 18379)
- Possibility to manufacture elements in various custom dimensions
- Corrosion resistance thanks to the DX51D+Z275 MAC spangle-free galvanized coating
Duct Leakage Classes
| Duct Leakage Class | Limit value of leakage rate (fmax) m³·S⁻¹·m⁻² |
Limit value of static pressure (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 |
Rectangular ducts and fittings are elements of ventilation systems made of high-quality galvanized sheet metal, complying with Polish and European standards. Offered in leakage classes A and B, they ensure durability, tightness, and easy installation thanks to the use of ventilation frames and corners. The standard module length is 1500 mm, and the possibility of custom manufacturing allows the product to be adapted to individual installation needs.
Dimensions [mm]
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