1-Gang, Dimmer Plastic Shaft Adapter 0.406″ Dia. Hole. Enerlites polycarbonate thermoplastic wall plates are manufactured to provide durability, flexibility, and resilience to bending and high-impacts. They are also heat & fade resistant to temperatures over 100 degrees which protects them from fading and discoloration over time, and have a flammability rating of UL94, V2