Hatco

Casters, 3″ diameter, locking (adds 4-1/4″ to height of unit)

Intended for use with 1 or 2 drawer chip drawers

Warming Drawer Unit, Free Standing, two drawers,  includes (1) standard 6″ deep food pan per drawer, stainless steel construction, thermostatic controls, 4″ legs

Comes with chip guards, 24/7 parts and service assistance, and a 2 year warranty on drawer warmer heating elements against burnout

Qdoba spec.