Southern Polyurethanes 1:1 Universal Clear is a true polyurethane high solids clearcoat that’s hard to run, does well in high heat and humidity, doesn’t require baking, won’t yellow whites, buffs well even several months after application, has excellent chemical resistance, doesn’t require a flex agent and works great with bad airflow – the booth fan can be turned off once the overspray is evacuated. It’s proven for both collision work and million-dollar restorations. A sprayable 2-gallon kit sells for $206. It’s also available in 2.1 VOC.