Used holding cabinets can be a good purchase if you buy from a respected dealer.  Here are some features of the model CA70-CVMP 12:

Full Size Heated / Holding /Proofer Cabinet.

• Adjustable Temperature Up to 225f.

• Dutch Doors on One Side for Maintaining Temperature.

• Working Interior Dim. 50″ H x 21″ W x 25″ D

• 5 Tray Racks.

• Insulated.

• Pass Thru, Single Door on Back and Dutch Doors on Front.

Water Tray.