BRAND NEW BLACK RV CAMPER TRAILER MOTORHOME POWER CORD HATCH / COVER (Black) NEW BLACK RV CAMPER ELECTRIC CORD COVER / HATCH Dimensions: Inner diameter is about 3 1/4" and the outer diameter is about 5-1/2" MADE OF PLASTIC WITH UV STABILIZER TO PROTECT FROM SUN FADE EQUIPPED WITH SNAP LOCK DOOR AND WILL ACCEPT UP TO A 50 AMP POWER CORD