Custom Portable AC Vent Kit for Awning & Basement WindowsInstalling a portable AC in an awning or basement window usually turns into a workaround. Most portable AC window kits are designed for sliding windows, leaving awning windows with gaps, loose seals, and hot air leaking back inside. This custom portable AC awning window vent kit solves that problem. Each portable AC window insert for awning windows is CNC cut from durable " clear acrylic and made to your exact window measurements, creating a tight