The narrow Media panels are 5 1/16" (12.5) tall and available in two widths, 1 1/2" (4cm)and 2"(5cm).  They can be used alone, or combined with other units (they are the same height as one tall unit and one short one together) and are ideal combined with a standard media panel with a horizonal unit above, see below.

The shelves are available in walnut or "glass". 

Accessories not included, but available separately.

Type of shelves  Walnut glass   Size  1 1/2in 2in