A BRE Green Guide A-rated frame is the heart of a new, cost-effective range of windows launched by architectural aluminium systems supplier Kawneer to meet the increasing demand for environmentally friendly and highly secure building products. <br> <br> The new AA540 series has been designed for new-build and refurbishment projects as much for its energy efficiency qualities as its aesthetics and security features. <br> <br> Advanced thermal break technology gives Kawneer’s AA540 a U-value of 1.7 and full compliance with Part L of the Building Regulations. <br> <br> The AA541 casement window, offering two BRE Green Guide A-rated frames, is available top or side-hung with multi-point locking to security standard BS 7950.<br> <br> The AA542 pivot window is available for horizontal and vertical applications to optimise natural ventilation. <br> <br> www.kawneer.co.uk or enter E0709 on the reader enquiry card<br> <br>