This Magnetron is a new take-off from a Samsung Chef microwave model ME21H9900AS/AA, the microwave was never mounted over a stove, and the fan was never turned on (other than verifying everything worked). The background for this item: my wife and I had purchased several Samsung appliances as a package, we did not need the microwave at the time, so we placed it in a closet. Fast forward 3 years (and out of warranty) we began using it, after a handful of uses (less than 3 weeks) it would intermittently show a fault code, so I ordered a circuit board. Before it came in I discovered a ribbon cable for the door control panel was damaged (melted). That cable was not available unless I purchased the entire door ($200 at that time) so we just went and purchased a new appliance. We had set everything off to the side and are now selling the parts to hopefully recoup some of our money. This fits numerous models below is a list on samsungparts.com but verify before you purchase. I am also listing additional parts so please check my other items, I will be happy to combine shipping, I have other parts I will not list because it is not worth the time due to cost, so please ask.