The answers were 1, 2, 3 or 4. The question? How many times each year are the filters above the ceiling at the high school changed? The correct answer is two.
Every year all of the 150+ filters on the roof of the school are changed in the summer. These are large filters, two feet by two feet or otherwise and two inches thick. At the same time, and once again in February, all of the filters above the lowered ceilings in the classrooms are changed. A complete filter change consists of over 300 filters.
By keeping the filters changed on a regular basis, the air quality of the building is kept up and the health of all is enhanced.
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