[MrE]

My coach isn't here to measure but they look like 4.5" PAR36. My coach is both 24v and 12v, have to have 24v for the ECM. I was looking on the internet for aircraft landing lights and discovered they use 1.0 amps at 12v but only 0.5 amps at 24v. They also come in a focused beam for landing lights and also a Taxi/Flood Beam.

LED aircraft landing lights on Amazon