This is essentialy a redisghn of my one in one out junction box it is also compatible with 20mm conduit with a push fit conection but can be held in with hot glue or zip ties if required. Lid screws on with four M3 screws wich can be screwed in to the plastic directly or in to threreaded inserts user depending. The inspection hatch should be just large enogh for easie accses to pull wires through without taking up exses space. Prints without supports when printed base down.
V1.1 is redisghned with slightly larger holes due to a prior miscalculation. It is advised to print this version
The author hasn't provided the model origin yet.