This is a in the box item. May require some assembly.
Overall
21.5'' W x 26'' D
Seat
21'' W x 19.5'' D
Minimum Overall Height - Top to Bottom
32''
Maximum Overall Height - Top to Bottom
35.25''
Chair Back Height - Seat to Top of Back
17.25''
Chair Back Width - Side to Side
21''
Overall Product Weight
30 lb.
Overall Height - Top to Bottom
35.25''
https://www.wayfair.com/furniture/pdx/langley-street-artemis-task-chair-lgly5152.html?piid=21223750