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For Outside Mount

Width: Window Frame 

             Left & Right Edge should check, then add

             3cm from left   3cm from right.

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Height: Upper and Down Check then add 5 cm.

For Inside Mount

Width: Wall Edge (dulo ng ding-ding)

             Wall Edge Left

             Wall Edge Right

             Measure

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Height: Wall Edge Upper

              Wall Edge Down 

              Measure 

Calculator
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