Eaton Wiring Devices VGF20GY GFCI Duplex Receptacle. GFCI Duplex Receptacle. Type Duplex. Color Gray. Material PVC Bottom, Nylon Top. GFCIs provide state-of-the-art, dependable electrical shock protection In addition to being tested to the highest standards to help ensure safety, Arrow Hart GFCIs will deny power and prevent re-setting if the device is no longer able to provide safe, protected power.