Calculation of Open Area

Round Perforations

Staggered

Enter Value (in mm)	:	D
Enter Value (in mm)	:	C
Select Angle (in degree) (for holes)	:	A	60 45 Straight

Straight Line Pattern

45 Degree Pattern

ROUND END SLOT SIDE STAGGER (SS)

Enter Value (in mm)	:	W
Enter Value (in mm)	:	L
Enter Value (in mm)	:	CL
Enter Value (in mm)	:	CW

ROUND END SLOT END STAGGER 1

Enter Value (in mm)	:	W
Enter Value (in mm)	:	L
Enter Value (in mm)	:	CL
Enter Value (in mm)	:	CW

ROUND END SLOT END STAGGER 2

Enter Value (in mm)	:	W
Enter Value (in mm)	:	L
Enter Value (in mm)	:	CL
Enter Value (in mm)	:	CW

SQUARE PERFORATIONS STRAIGHT LINE

Enter Value (in mm)	:	S
Enter Value (in mm)	:	C

SQUARE PERFORATIONS STAGGERED

Enter Value (in mm)	:	S
Enter Value (in mm)	:	C