Features: 72mm National Standards Hole Distance: 72mm/2.82inch Regular National Standards Switches Socket Hole Distance: 72mm/2.82inch Socket. This 86 Type Wire Box Template ensures accurate installation of socket and Switches, saving time and energy through accurate positioning and alignment. The 86 Type Socket Wire Box Template is suitable for creating openings in Switches socket box of various size, meeting different installation requirements. Clear and guidance make this template easy to use, simplifying the installation process with accurate reference point for accurate grooving. Front and back can install with boards or punched no need for pre installation holes on the back board. The boards can also be installed with holes after being mounted on wall. Specifications: Component:Aluminium Styles:1,2,3 Package Includes: 1Set 86 Type Wire Box Template note: Please allow 1mm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color.