Are the chairs shipped in 4 boxes - one box for each chair?
No they were shipped in one box. They went together easily and I am very happy with them.
Will these chairs stack?
No. However you can place 1 atop the other cushion side down
Is the seat to straight ?
No the seat is not too straight. The chairs are very comfortable.
Can anyone provide these dimensions for the chairs width , depth, height, seat width, seat depth, seat height
The overall height of the chair is 35". From the floor to the top of the seat is not quite 17". The seat measures 16.5" D x 18" W x 3" thick. The back is 23.5" H x 15" W. These are as close as I can get.