R-Value†

Solar Heat Gain Co-efficient†

Hailstone Test*

WERS max 5 stars

NZ Standards
 0.50  0.23 VELUX Simulated Tests
ASTM 3822-2009		     NZS4223.4, AS4285, NZS3604, NZ1170

† R-value (m2 K/W) and SHGC based on NFRC simulations at 90o installation pitch (VSS, VSE, VCS) norminal skylight size 1200mm x 1200mm. *Hailstone test not conducted on solar panel not attached during test. NB: Contact VELUX when installing VSS above/below combination due to positioning of solar panel.