Night-Vent Locking Avon Fastener (Steel Window)The Art Deco range combines timeless elegance with modern functionality. The clean, geometric styling of this range offers a touch of sophistication to any window. Our premium window espags. are weighty and long lasting. Due to their slim fixing plates, our espagnolettes can be fitted on any type of window including uPVC and timber. These fasteners are handed, so it's important to make sure you choose the correct hand. From the inside looking out, if