That's a Mini Tower.
Yours is a Desktop Chassis. The difference between DC and SFF is the full sized DVD drive. On the SFF it's just a slot.
Attached I have pictures of the desktop chassis model 740 along with a picture of the front face of the 740 which is inside of my cab. Mine doesn’t have the horizontal disc drives.
Yours is a Desktop Chassis. The difference between DC and SFF is the full sized DVD drive. On the SFF it's just a slot.