Respond to these showcases www. ajplus. co. uk/ajdirect Readers may obtain information about these products by filling in the enquiry numbers on an AJ enquiry card. Advertisers wishing to promote their products on these pages should contact Chris Bond on 020 75056816 Swiss architectural engineer Hawa AG has launched a new sliding-shutter system for external windows, now available in the UK exclusively from Häfele, that opens up a vast range of potential for architects and designers. Frontslide 60 uses a sliding, rather than pivotal, operating system.