Not sure of age (guessing less than a couple years, heard they were removed from a whole house, when homeowner didn't like the look, and put them in a shipping container), but this brown aluminum clad fir window was made by Loewen and still has it's protective coating on the glass from a brief install. Unfortunately there are no energy tags attached. This one consists of two large fixed windows that look like they might work great as a studio, tiny house or sun room wall.