One of the city's sadder Burger Kings, the one at Fillmore and Post streets, has closed and will reportedly be replaced by local burger concern Super Duper Burger.

It's some fairly good news for burger fans and Super Duper fans that the next location of Super Duper Burger will be at 1701 Fillmore Street, at the corner of Post, catty-corner from the AMC Kabuki and across the street from Copra.

KRON4 had the news via a representative from Back of the House Inc., the restaurant group launched by Adriano Paganini that now has a local empire of over two dozen restaurants.

The new Super Duper is expected to debut on Fillmore Street this summer, and will be the chain's ninth location in San Francisco, and 21st overall.

The chain has been in expansion mode recently, opening its 20th location in Corte Madera earlier this month, and with upcoming locations in San Ramon, and in SF's Union Square — where we learned last month Super Duper would be taking over the remaining kiosk/restaurant space on the east side of Union Square Park, and that opening is scheduled later this year.

Super Duper, with some exterior branding that's strangely similar to Shake Shack, opened its first location in the Castro neighborhood in 2010. The restaurant, co-founded by Eddie Sarti, espouses fast food with "slow food" values, using only organic, locally-sourced, humanely raised, never frozen meat from Brandt Beef, as well as soft-serve ice cream from Straus Family Creamery.

That Fillmore location of Burger King, while not quite as sad as the former Civic Center Burger King, was one of the gloomier and lower-quality locations in the city and not particularly popular for that reason.