Door Weight:lbs.
Clear Opening:Inches
Select an Opening Type:
            SOSS
            SO2S
            COSS
            CO2S
        
        Calculate
        

        
Time measured at 1" from 
full open to 1" from full close
        
SOSS - Side Opening, Single Speed
SO2S - Side Opening, Two Speed
COSS - Center Opening, Single Speed
CO2S - Center Opening, Two Speed