RV Designer Universal Round Electric Cable Hatch. Includes two interchangeable rear buckets. One fits 3 inch hole, one fits 3-1/2 inch. 3 inch bucket accepts 30 amp cord and plug; 3-1/2 inch accepts 30 or 50 amp. Unique design diverts water. Gasket and screws included; everything you need for easy installation. 5-1/8 inch diameter faceplate covers holes and marks from most other hatches. UV protected plastic. 1-yr. warranty. Full-color box of 5 inch x 5 inch x 5 inch, white.