06-06
free area of 35 percent. For drainable louvers, maximum velocity of
1,000 feet per minute and 45 percent free area is acceptable.
10. MISCELLANEOUS
At medical centers where cottonwood trees, or similar types, are likely
to interfere with operation of air intakes for air handling units,
cooling towers, or air cooled condensers, provide easily cleanable
screens or roughing filters at the air inlets.
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