CWKN is a non-locking wing knob designed as an optional latching accessory for hinged windows and hinged bezels on Concept window kits. The knob is black and provides a simple, ergonomic control mechanism for opening and closing hinged window assemblies. It is available as a non-locking version, maintaining the Type 12 rating when used with compatible Concept window kits. The wing knob is easy to operate and integrates seamlessly with Hoffman's Concept fixed and hinged window kit systems, offering users convenient access to equipment and components installed behind the viewing area.