Calculate Your Clear Openings


You can calculate up to 5 of your own custom size clear openings by choosing the appropriate product type and entering the box height and width IN INCHES and clicking the Calculate button. The Enter key will not work on this page. 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)

   

 

       
   
       
   
       
   
       
   
       
   

  

 

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