From wikipedia (translated)
The beer is brewed by AB InBev in Leuven . It is an amber Belgian beer, type Special Belge with alcohol content of 5.1%.
Beer was the former brewery Martinas from Merchtem in 1928 marketed. In the beginning the name was Ginder-Ale used (with a hyphen). In 1973 the brewery was taken over by the Artois Brewery and the brand came true after several mergers in the AB InBev group. Ginder Ale was brewed until 1991 Merchtem before production was transferred to Leuven. The beer is found mainly in the region of Merchtem.
Website: taalkeuze | AB InBev Belgium
I notice the web site is copywritten "Anheuser-Busch InBev © 2014"
You could always try their Contact page and ask if there is a US distributor.
FAQ/Contact | AB InBev Belgium