“Monitor Shelf Options:
54.7 cm ( 21.54″” )
49.7 cm ( 19.57″” )
44.7 cm ( 17.60″” )
Distance between slots: 5.0cm (1.97″” )
Keyboard Shelf Options:
36.775 cm ( 14.48″” )
33.275 cm ( 13.10″” )
29.775 cm ( 11.72″” )
26.275 cm ( 10.34″” )
22.775 cm ( 8.97″” )
19.275 cm ( 7.59″” )
Distance between slots: 3.5cm (1.38″” )