Q: Can this set of barn door hardware with soft close be used outside with or without a cover? Like installed for a fence gate?

A: We have not attempted to use this set outdoors yet. The barn door wheel and soft close are made of nylon, and this might be a problem in the sun over time. Our concern would be the wheels and soft close softening/deforming in direct sun possibly (depending on where you live and how heavy the door is), or cracking with freezing temperatures. If used changged into metal or stainless hardware, which has rust issues. Anyhow, you'd provide a small shade cover for the wheels and soft close to protect from UV rays or heat damage. Dark plastic can get hot in warmer areas like the southwest.