This unit does not tell how much energy the air conditioner or furnace consumes in a season. To know how much energy air conditioner unit consumes, you need to know ac seer rating (for cooling). Iâll explain how much energy the air conditioner units produce and what does 15000 Btu air conditioner unit means.
Both the Vietnam and Korean War's M1 helmets were virtually identical. There are some differences between the World War II M1 helmets and the Vietnam and Korean wars' M1 helmets. The M1 helmets from the World War II era had a steel stripe that was rolled around the outer edges of the helmet.he M1 helmets during the Vietnam and Korean War eras had what was called a steel pot as the shell and they were a little taller. Most of them had some kind of helmet cover on them.
The M1 helmet is extremely popular with militaria collectors, and helmets from the World War II period are generally more valuable than later models. Both World War II and Vietnam era helmets are becoming harder to find.owever, the shape of these helmets is slightly different from the World War II and Korean War vintage M1, and a trained eye can tell the difference. For example, the slight S shaped curve on the rim is more pronounced on the World War II and Korean War helmets.