Copyright 2010 StormShutterServices.com       Input only OPENING size in INCHES      Round fractions to nearest 1/2” enter .5 If prompted please enable  browser to run active x  controls. Calculators will not  harm your computer and no  files are transfered. Calculator is for informational purposes only. Before any agreement all openings must be measured by Daniel Bumpus LLC. Click to add storage hoods StormShutterServices.com Hurricane - Storm - Security - Protection Fabrication - Installation - Service Serving Cape Coral - Fort Myers - Naples - Port Charlotte and surrounding communities. “27 Years Of Owner Construction Experience”