Does it have an on/off switch?
No on/off switch. It must be hardwired and connected to a wall switch
Could someone tell me the size of the shade?
The shade is 7" high with the widest diameter 5" at the bottom and then tapers up to 3.75" at the top.
Where can I buy a replacement shade for this sconse?
For any replacement requests you can reach out to our customer service team by calling 888.507.0099, or by emailing sales@lineadiliara.com.