Leviton 80714-GY gray blank wallplate. A Commercial Specification Grade, standard size single gang plate (4.5"h x 2.75"w) made of a tough unbreakable thermoplastic - do not confuse them with regular Residential grade plates that can chip and crack. Features include:
Smooth face and rounded edges resist dust accumulation
Molded thermoplastic for maximum resistance to impact, abrasion, fading and discoloration
Resistant to mechanical stress associated with high abuse applications
