Aluminium window systems
Epic 121 Series
A window series with supplied thermal and acoustic data for project-specific technical review.

Product drawing from supplied technical material
Technical overview
- Sample dimensions
- 1800 × 1800 mm
- Thermal performance (U-value)
- 1.2 W/(m²·K)
- Air infiltration (source notation)
- q1 0.35 / −q1 0.34; q2 1.33 / −q2 1.29
- Water penetration resistance
- 700 Pa
- Structural wind performance (source notation)
- p3 5.0 / −p3 5.0 kPa
- Acoustic performance
- Rw + C 40 dB / Rw + Ctr 39 dB
The drawing is the supplied 122 mm casement window sheet. Values are supplied sample results, not a general certification claim. Air infiltration units are not stated in the summary; consult the complete report before comparison.