Architectural aluminium systems supplier Kawneer has enhanced its AA540 window range, which combines value for money with a BRE Green Guide "A" rated frame*, with a tilturn variant. <br> <br> The AA543 tilturn window joins an AA541 casement and AA542 pivot window in suiteing with Kawneer's AA100 and AA110 curtain walling, 451PT framing and door systems to give specifiers and architects ultimate flexibility. <br> <br> The tilturn uses a multi-chamber thermal break core, ensuring thermal efficiency (U values down to 1.5) and full compliance with Part L, while optional trickle ventilation also helps meet the requirements of Part F. <br> <br> Like its sister products, the AA543 tilturn (tilt for ventilation and turn for cleaning) is suitable for newbuild and refurbishment projects in the education, healthcare, commercial, retail and residential sectors where cost is a key driver. The full opening in the turn position offers an escape route in an emergency (subject to size). <br> <br> * Corresponds to the BRE Global Green Guide online generic specification for windows and achieves a summary rating of A www.thegreenguide.org.uk, Element Number 831500023).