About 2” wide and 1 cm thick. Lightweight plastic. Looks like it slides onto something. No markings other than the image printed on the front. No removable parts, all solid. It was
Truma Gas Deckenlampe Deckenleuchte Lampe Leuchte in Rheinland-Pfalz - Mainz | Lampen gebraucht kaufen | eBay Kleinanzeigen