The opening on the door for the power cord is about 1"
1 Brand New RV Camper electric cord cover / hatch. The color of this hatch is white. It is made with plastic, and UV stabilizer is added so the color won't fade easily. This hatch come with snap lock door, and will accept up to a 50amp power cord. The inner diameter is about 3-1/4" and the outer diameter is about 4-1/2". The opening on the door for the power cord is about 1".