Architectural aluminium systems supplier Kawneer has updated its specification guide (www.kawneer.co.uk/pr/sg11) to help architects and specifiers select the most appropriate curtain walling, windows, framing and doors for their projects. The updated guide includes Kawneer’s new, cost-effective AA540 A rated window system, featuring the AA541 casement window and AA542 pivot window. Two new product selectors are also included to help specifiers …