Jason found this frame at Amazon.
He did not need the mat, because the poster size is right 36x48 inch. So he google search artgala and reach me, see if possible to order directly from me and save the mat and money. Of course! He got the frame soon and nicely got his poster nicely framed and displayed at home.
What a nice poster!!
He re-ordered the same frame for his daughter today as a gift. Now ready to pick up!
All the best for you and your family!