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Technical Data: Calculate Clear Opening

You can calculate up to 5 of your own custom size clear openings by choosing the appropriate product type and entering the rough opening height and width IN INCHES. Please note that all dimensions are ± 1/16.
(You MUST enter numeric values - fractions must be entered in decimal format - see chart below for conversion)


Product Type:
R.O. Width: R.O. Height:        
   
R.O. Width: R.O. Height:        
   
R.O. Width: R.O. Height:        
   
R.O. Width: R.O. Height:        
   
R.O. Width: R.O. Height:        
   


             

Fractional Value Decimal Equivalent
1/16 .0625
1/8 .125
3/16 .1875
1/4 .25
5/16 .3125
3/8 .375
7/16 .4375
1/2 .5
9/16 .5625
5/8 .625
11/16 .6875
3/4 .75
13/16 .8125
7/8 .875
15/16 .9375