A strong, durable, and easy-to-maintain uPVC window from Crystal. Featuring a multi-chambered profile with high-quality 28mm double glazing, it provides excellent insulation and energy efficiency for any modern home. This casement window has a top-hung opener over a fixed light, with trickle ventilation for improved airflow and an espag locking mechanism for security. Offering superior heat retention to single-glazed alternatives, double-glazed windows help to keep rooms warmer and reduce condensation build-up. Features include: A-rated to 1.3 W/m²K, easy to clean and maintain, espag locking mechanism for security, trickle ventilation for improved airflow, classic white exterior and interior. Includes frame, glass, white handle, and cill. The product height includes the PVC cill. Comes with a 10-year manufacturer's warranty.