Product Description
When building in a Sharp countertop microwaven oven, be sure to use the proper Sharp built-in kit. All Sharp kits are UL approved and provide ductwork to assure proper air circulation around the product. Never enclose a microwave oven so tightly that air cannot circulate around it. It will not function properly in a tight enclosure. Prepare cabinet or wall opening to provide access to a separate 3-pronged 120V AC outlet of 15 amps or larger.
Documentation
From the Manufacturer
Disclosures

Cancer and Reproductive Harm - P65Warnings.ca.gov
When building in a Sharp countertop microwaven oven, be sure to use the proper Sharp built-in kit. All Sharp kits are UL
approved and provide ductwork to assure proper air circulation around the product. Never enclose a microwave oven so tightly
that air cannot circulate around it. It will not function properly in a tight enclosure. Prepare cabinet or wall opening to provide
access to a separate 3-pronged 120V AC outlet of 15 amps or larger.