Our newly invented GFCI receptacles has got the new 2006 UL approval and they exceed 2006 UL requirement. The feature: 1) UL listed, UL & CUL FILE NO. E229322 2) 15A/20A, 125VAC 60Hz feed through 3) Back and side wire 4) Various colors available(almond, deep-almond, black, gray, ivory, white) or at your opinion 5) Solid color or Red/Blue button (or at your opinion) 6) Optional wall plate 7) Patent Application NO. 200610025417,9 The Product has power-failure and reverse mis wiring protection functions. More information, please contact us as free!