PlusTec Double Clear Glazed Windows PlusTec Frame type Timber Glazing Double Uw (Whole window U Value) 2.65 SHGC (Solar Heat Gain Coefficient) 0.53 Made in Australia on quality European equipment to custom sizes and design. Double-glazing with 24 or 30mm overall double glazed units Environmentally friendly Ca-Zn stabilized, lead-free three chamber profles (frames) using a hot climate mixture suitable for Australian conditions PlusTec