Louvre Windows - Trend Meranti Trend Windows & Doors Frame type Timber Glazing Single Max. length 2608 Max. height 2402 Width 138 Uw (Whole window U Value) 4.972 SHGC (Solar Heat Gain Coefficient) 0.672 Opening Horizontal sliding, Lourvres Versatility, practicality and affordability make them a very attractive choice. Trend Windows & Doors