Hi there,
I can help you with your concerns regarding a mounting kit for our Samsung Microwave. All units that are over the range will come with a mounting kit. If you purchased a brand new unit and it did not come with one, then please feel free to contact us via Facebook Messenger (http://m.me/samsungsupport) or Twitter (https://twitter.com/messages/compose?recipient_id=18768513)
Please reference ticket number 1142473707. We thank you for being a part of the Samsung family. ^Brad