Suburban Furnace Cabinet 101874 (NT Series) Shell for Core This is the cabinet, or shell of the unit. Cores and cabinets are now sold separately. Does not include access door* Compatibility: Suburban Furnace N30M/ NT-20T/ NT-24MA/ NT-24MP/ NT-24MPD/ NT-24S/ NT-24SP/ NT-34MA/ NT-30MP/ NT-30... See More