Duplex Diner is a American Traditional restaurant located in Adams Morgan area in Washington, DC 20009.
- Neighborhood: Adams Morgan
- Cuisines: American Traditional
- Minimum Delivery:
- Features: Open Late, Accepts Credit Cards, Take Out
- Business Hours: Sun-Mon: 6pm-11pm,Tue-Wed: 6pm-12:30am,Thu-Sat: 6pm-1:30am,Brunch,Sun: 11am-4pm
- Note:
- Services: Dinner, Brunch