The Aria Venting Wedgeless Fastener is both unique and innovative. Created with opposing tongues, the fastener allows controlled ventilation especially in windy conditions. Its wedgeless and concealed fixing design was developed with the end user and the fabricator in mind, as it enables easy installation, product operation and improves aesthetics Suitability - Suitable for use on residential awning and casement windows. Available in left and right handed models Fixing Surface - Aluminium or uPVC windows. Finishes - Satin Chrome, Powdercoat, Special Colours