WINDLOAD CHART

Example 1: A 30" single span shutter will withstand windloads of
up to 230 lbs. per square foot.
Example 1: A 72" double span shutter will withstand windloads of
up to 230 lbs. per square foot.
Example 1: A 124" triple span shutter will withstand windloads of
up to 230 lbs. per square foot.