Flair Latch
The couch is made by Flair Industries. You should see their contact data on the main portal page on the right. If not, call Heartland service for their number.
My couch had the latch installed misaligned - the two parts were seperated about 2 inches side-to-side. But once I installed them correctly, the drawer still comes open during travel. Somebody needs to come up with a better latch.