Tower Manufacturing Shock Buster 15-Amp 3-Wire Grounding Single to Single Yellow Gfci Standard Adapter in the Adapters & Splitters department at Lowes.com
Southwire Single Outlet White GFCI Adapter with Manual Reset | The Home Depot Canada
Generator Power Cord Marine Shore Power Trailer Cord RV Generator Adapter - Conntek. 5-15P to (3) 5-15R GFCI Adapter