These lights have an overall diameter of 140mm. Lens depth is 20mm. The Lens can be used alone as it has a watertight back. Making a very slim three function lamp.
Also you could bond them in or a simple U bracket will hold them in place from behind the panel. You can even surface mount with the supplied M6 studs.
Super bright LEDs give the red stop/tail and amber indicator.
’E’ Marked 140mm STOP TAIL AND INDICATOR HAMBURGER #RL58