3D model designed by Sedowynt using Autodesk Fusion (360) Personal License. The model files include a V1 and V2. The V1 only has the keying, while the V2 also has a rim on the other side. The V1 is the one visible in the picture, and is the one that has been printed and tested. The V2 is more refined, but hasn't been printed or tested yet. My design requires sealing tape to install. Feel free to remix and iterate on the design. The model in the picture has been printed from PLA. Warning! Only use PLA if your ac exhaust air temp. doesn't significantly exceed 50 °C or 122 °F. Do not use with aluminum duct.