Yes you are mostly right Streetlight98, but this one is actually a powerdoor! The current newest GE M-400A2s have no vents!
Also look carefully....see the door obviously looks newer than the rest of the fixture too! The best way to know if its a split door or a GE M-400A1 is the kind of lock used on the door....I kept telling someone to take a pic of all the GE's side by side...but he hasn't done it yet
Actually, this does appear to have a M-400A2 door because of the NEMA label. The split doors and M-400As had shiney golden NEMA tags while the A2's had/have plain yellow tags. And yes, I'm aware that the M-400A2 lights don't have vents.
Well they could pull them off scrapped ones. but if someone here has both lumes post a pic of a B2255 with a M400A2 door and a M400A2 with a B2255 door.
it is, but it reduces inventory, so that's why they do it. The replacment powerdoors actually don't cost that much less than a new fixture. I was told about $90. That's compared to the average $150 for a GE cobrahead.
But do they replace any Powr/Doors? If not then I can see why they don't bother but if they already stock the HPS ones it would be plain stupid not to replace them.
They stock HPS R2s. National Grid doesn't use power doors. Narrgansett Electric, the company they bought out, used the MV power doors. Sice NG doesn't stock the A2 doors, they have to replace the unit.
I saw an M-400 A1 FCO close to Downtown denver, the fixture was dirty and paint was wearing off, except the power door, because the power door was brand new from an M-400 A2. the fixture looked off with the power door all nice and shiny and the rest was worn out. xD
Also look carefully....see the door obviously looks newer than the rest of the fixture too! The best way to know if its a split door or a GE M-400A1 is the kind of lock used on the door....I kept telling someone to take a pic of all the GE's side by side...but he hasn't done it yet