Entire or partial end wall or side wall sections of a corrugated metal building can be constructed economically with an integrated solar heating panel which can supply forty to sixty percent of {HEAD ~ winter heating} during {TAIL ~ daylight hours} 
during
Entire or partial end wall or side wall sections of a corrugated metal building can be constructed economically with an integrated solar heating panel which can supply forty to sixty percent of { HEAD ~ winter heating } during { TAIL ~ daylight hours }
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