This option is for an electrical inlet on the back of the house so you can remove the cord and safely store it away for the summer. The inlet has a cover to protect it from the weather. DETACHABLE CORD INLET$29.00 Luxury Cat Houses, Feral Cat Houses, Cat pods IN STOCK ITEMS SHIP IN 1 TO 2 BUSINESS DAYS, HOUSES WE HAVE TO BUILD SHIP OUT WITHIN 12 BUSINESS DAYS.