Samsung range hoods run under the NK model prefix, in under-cabinet and wall-mount chimney configurations. A representative wall-mount model is the NK36N7000WS, and the line spans several widths and blower capacities aimed at matching a hood to the cooktop below it.
The characters after the prefix encode the width (the “36” above is a 36-inch hood, with 30-inch versions common too), the blower and generation, and a finish suffix like WS for stainless. Higher tiers add auto-connectivity that links the hood to a Samsung cooktop over SmartThings, so the fan and light switch on automatically when the burners are used, along with multi-speed blowers, a dishwasher-safe aluminum grease filter, and LED task lighting over the cooking surface. The rating plate carrying the full model and serial number is on the underside of the hood body, visible once the grease filter is unclipped and dropped down. The serial number on that plate dates the build, so a technician can tell which NK generation you have even when two models share the same width and finish.
Even though an NK hood carries no fault-code display and is diagnosed by symptom, the full model-and-serial string still governs parts: Samsung has used several distinct blower and control designs across NK generations, so a motor, grease filter, LED module, or control board from one NK model often will not fit another. Confirming both numbers up front also settles whether your hood is the SmartThings auto-connect version, which uses a different control board than the manually switched models. Read the complete number off the plate before you book range hood repair for a clear, upfront quote, and the right part can be sourced for the first visit.