Reference shelf
A handy pullout workspace, available when you need it.

Reference shelf filler box
This spacer ensures a consistent vertical height among shelving when a reference shelf is included on some, but not all, units.

1" base
Choose a 1" base if you are placing the unit(s) on a mobile/lateral carriage or if you prefer the bottom shelf 1" from the floor for restricted height applications.

4" base
Choose a 4" base if the unit(s) are the rear stationary in a lateral track system or if you prefer the bottom shelf 4" from the floor for easier access (4" bases include floor levelers).