Approx 4.25 inches in diameter and 8 inches front to back. One pic shows the siren against a standard Heinz baked bean can to give you an idea of the scale. Its LOUD and rated at 114dB!
A period Federal siren metal data plate is included. It is flat and you will need to gentle curve to match the profile of the body to get it to fit correctly. You can then either screw or pop rivet it in place (fixings not include). I will include a data place with the voltage to match the one you have selected, 6V, 12V or 24V.A siren push button in black is included. It goes in a 16mm hole. It also has a metal siren button date plate included that you could stick on the dash of your vehicle and then mount the button through it! (the siren button screws into pace and that will hold the data plate in place).
For other areas please ask. The item "Willys Jeep Ford GPW WW2 Siren Federal Champion MARS Sirene 6V small (2)" is in sale since Saturday, September 26, 2020. This item is in the category "Vehicle Parts & Accessories\Military Vehicle Parts". The seller is "nicenewdukebits" and is located in Bristol. This item can be shipped worldwide.