These were often used in early indicator LEDs like those on many of the Commodore computers. They are long rectangle shaped and had 2 LEDs that could be used separately or wired in series or parallel. I tried to search for rectangle dual LED, and got nada (there seems to be a lot of hits for car lights and home lights but not discrete LED). rectangle LED without dual got me lots of hits but all are single version.
https://i.imgur.com/caa37pV.jpg
https://i.imgur.com/NqeraGF.jpg
Thickness is roughly the same as standard rectangle LED but the width seems like 2 LEDs stuck together. I'd go with 2 separate rectangle LEDs but it just won't look the same on my old Commodore 128.
https://i.imgur.com/caa37pV.jpg
https://i.imgur.com/NqeraGF.jpg
Thickness is roughly the same as standard rectangle LED but the width seems like 2 LEDs stuck together. I'd go with 2 separate rectangle LEDs but it just won't look the same on my old Commodore 128.