Trend Meranti Casement Windows - Trend Meranti Casement Windows Trend Windows & Doors Frame type Timber Glazing Single, Double Min. length 1830 Max. length 1810 Min. height 2122 Max. height 2102 Uw (Whole window U Value) 1.8 SHGC (Solar Heat Gain Coefficient) 0.45 Opening Horizontal sliding As a result of Trend’s innovative casement and catch design, the outer side of these windows can easily be cleaned from the inside. Trend Windows & Doors