A: Hi there,
If you are having questions about installation, you can view this unit's installation instructions here: https://images.homedepot-static.com/catalog/pdfImages/c3/c3b79815-ca5d-4a56-a28f-5d2108fcceb7.pdf - Take a look at pg. 3 for the start of the cutout explanation. We hope that this helped! Thanks so much for your question. -MS