I just built this one last year for my daughter and son-in-law. Didn't make it for outdoors though. The top and benches are Hard Maple rough cut 1". The spanner beam on the bottom is 6"X9" also rough cut hard maple. 4"X4" legs and cross members.
Bought everything at Downes and Reader in Stoughton, MA. They have a lot of exotic hardwoods and also have locations in ME and CT.
http://www.downesandreader.com/
