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 Levolux's technical specification binder details the company's complete range of ventilation louvre systems, with product datasheets and drawings. It includes the single one-piece VLS50 XHP extruded louvre - that offers both airflow and weather protection.