Welbilt:
When I PM'd you to respond to your original question to me, I forgot about Welbilt. That name is also the correct number of letters for the name on the A/C unit.
As I mentioned to you, I cannot get over the extremely fancy installation of the unit - set designer Lyle Wheeler had it built into the center of a bay unit with small panes in the center, and French doors on either side. What Wheeler designed was a panel set into the middle of the center window, with the window mullions connected to the panel, and two panes custom-cut into "L"-shapes. It's a very far cry from the usual utilitarian window installation seen in real life!
While the exterior of the building seen was real, shot on location in NYC (164 East 61st), the interiors were on a soundstage in Hollywood (sidebar: They tried to shoot the famous "skirt-blowing" scene on location, but the crowd that gathered made so much noise, roaring when Monroe's skirt blew up, that the footage couldn't be used. A set matching the location had to be built on the backlot for a reshoot *). The apartment building is still there, but it's painted white now and the shutters are gone.
Obviously, this was very photogenic and glamorous, which was pretty much the whole point of a 20th Century-Fox romantic comedy in 1955. Here's a color screen grab of the same shot replicated for the still photo above:
* Also, Monroe's husband of the time, Joe DiMaggio, witnessed the location shoot of the "skirt-blowing." The crowd's lustful roar - to say nothing of how his wife worked the crowd to provoke it - jolted Joe so much he set things in motion to end the marriage.
