Photo Shows HT105S
Length of HT104S is 38-1/3 inches
Back Tray is 9 inches high. Middle Tray is 6 inches high.
Depth (distance from the front of the bottom tray to the back of the top tray) is 18 inches.
Humidi Grow Tray - Brown - Set of 3 HT104 With Free Stand
Humidi Grow Tray - Black - Set of 3 HT104 With Free Stand