NEMA 14-30R 220V Outlet Box Installation Kit, ETL 30A 4-Prong Dryer Receptacl…
Safety-certified: The 30A receptacle is ETL listed, and the electrical box & accessories are UL certified.
Xuanhua NEMA 14-30P to 14-30R Extension Cord 125/250V 21-30A Blue/Black
Xuanhua NEMA 14-30P to 14-30R Extension Cord 125/250V 21-30A Blue/Black