We have 2 of these lighted mirror cabinets. The light is very powerful. The only problem I have encountered is a repeated failure of the threaded power connector to the mirror door. The wire goes into a long black plastic screw on connector, and because there's no flexible flange where the wire enters, the plastic appears to be cutting the wire insulation causing the lamp to flicker or just quit. The connector is poorly engineered for this task. It should have a built in 1" STRAIN RELIEF around the wire to prevent 90 degree bending when the door is closed