YKK AP's YES Structural Silicone Glazed (SSG) Vent enables designers to provide ventilation to architectural aluminum wall systems without adding the large sight line of traditional windows. It is designed for use with Storefront, Window Wall and Curtain Wall applications. This product is an excellent choice for schools, offices and other commercial structures requiring ventilation. The vent has not sightline, meaning it seamlessly blends in with the surrounding framing system to become virtually invisible when viewed from a distance. This system accepts 1" insulating glass, and the glass is bonded to the vent's frame without a need for additional retainers, providing a clean look.