This is a simple envelope for a ceramic E27 lamp holder and I used it to install a new lamp on a wall outside my house.
This support is designed to be screwed using a wall plug (6mm plastic anchor).
The bulbholder is tighten to the structure using two simple self-tapping screws.
The bulb holder, also known as porcelain lampholder, it's model E27F519.
I used "support lite" option and 20° angle.
Printed with 0.14mm layer thickness and Z-UltraT filament in about 5h 36m