Cooper Lighting V90163 is a Truly Trimless Adjustable Downlight that can be used in various lighting applications. It requires professional installation and should be handled by qualified electricians. The fixture can be hung using the Hanger Brackets located on its sides. The Adjustable Extrusion Frame sits on top of the installed Drywall, and the bottom of the Housing walls match the bottom of the Drywall surface. The Transformer Access Door allows for easy access to the Transformer mounted outside the Wiring Box.