It is a single row of sleeper seats (180 degree recline, but not quite as comfy as the AA FS which is less bumpy). Config is 2-1-2. LAN only has a few planes with an F cabin (the 343s do but not the 763s). LAN food/wine in F is very good, but AA also has superb J service JFK-EZE (maybe their best J route, though the food is better northbound).