Wallo APR-0901 Round Access Panel, 9-Inch Diameter PLEASE NOTE: Minimum Rough Opening diameter: 8", Maximum Rough Opening diameter: 8.9" PAINTABLE, COLOR: OFF WHITE. CUT OUT TEMPLATE is available for download or use inner circle as a template/draw a circle with a compass Provides permanent access to ductwork air damper controls, electrical junction boxes, etc. and does not require framing, screws, latches or fasteners Works in walls or ceilings up to  thick