This frame is designed to transform your Nextion 3.5" screen into a usable desktop / mountable device.
Included are 4 screws to mount the display in the frame. On the backside there are studs in the corners, so you can create a frame, or backplate that is mountable.

There is enough room in the back to mount a USB-TTL-convertor (not included) to create a seperate 'screen'

No backpanel included, unit is open on the backside.