Bring energy efficiency and contemporary design together with the Crystal Black and White RH Side Hung Next to a Fixed Clear Double Glazed Window 1190 x 1115mm, perfect for modern homes. Enjoy the benefits of A-rated performance, espag locking with night vent position, and included white handle and PVC cill for easy installation and peace of mind. The high-performance glazing unit, complete with argon gas and Warm Edge spacer bar, helps keep your space comfortable while the trickle ventilation ensures a fresh atmosphere throughout the year.