Hello Lori,
Thank you for reaching out and letting us know your inquiry if you can install this Samsung microwave under a 12inch deep cabinet. We understand how important it is for you to know. We're here to help.
As per checking, yes, you can install this Samsung microwave since the maximum depth of the cabinet is 12".
You may check the installation guide to know more about the installation requirements for this Samsung microwave.
https://downloadcenter.samsung.com/content/EM/202202/20220223181959631/ME4000R_ME19R7041FS_AA_DE68-04585A-02_EN_220120.pdf
For other concerns, do not hesitate to reach out via our Support Channels below:
1. Facebook Messenger: http://m.me/samsungsupport
2. Twitter: https://twitter.com/messages/compose?recipient_id=18768513
3. Samsung Community: https://us.commuity.samsung.com/t5/Samsung-Community/ct-p/us
Thank you, and stay safe!
Your Reference Ticket Number: 1144360084
-Angelica