The Carter-Hoffmann M series hot food modular holding cabinets feature the latest in modular holding technology. They have top and bottom heat, with separate controls, individual pan timers, alpha-numeric displays and self contained food covers. Programming for menu settings can be done manually or via USB port. Each pan can have up to 25 pre-programmed menu settings. Models can have single-sided or pass-through access to pans. Pass-through holding cabinet models have rear displays for temperature and time.