Model :86 universal clear box Material: environmental protection plastic Size: 86x86x32 mm Screw hole distance: 6-6.5cm Advantages: high hardness, white material, strong oxidation resistance, long time yellow, won the European Union RoHS certification bottom box Applicable scope: without digging buried cassette, can be directly installed on the wall, and then the type 86 dark panel installation, go with open Includes 1pcs