Looks more like a GE brand, wall mount. By the surrounding area, it looks like wood was put up around a window frame to mount the air conditioner in the right size/shape. The finishing work is really rough, so its in a basement, a cabin, shack, etc.
https://www.ajmadison.com/cgi-bin/ajmadison/AJEQ12DCF.html?gclid=EAIaIQobChMIv6_SiNjK6AIVFYzICh0TlAO_EAAYASAAEgL5IvD_BwE