Products Sizes
Grade Designation

Description
Clear Opening in Frame, A
B C D

E

Min

F

Nominal
(1)
(2) (3) (4) (5) (6) (7) (8)
LD-2.5

Light Duty

Rectangular
450x600
50
50
50
50
559x709
LD-2.5

Light Duty

Square

400x400

450x450

50

50
50
50
50
50
50
50
50
LD-2.5

Light Duty

Circular

370
450
500

560

50
50
50

50

50
50
50

50

50
50
50

50

50
50
50

50

479
559
609

669
MD-10

Medium Duty

Rectangular
450x600
70
50
50
50
560x710
MD-10

Medium Duty

Square

450x450

600x600

70

70

50

50

50

50

50

50

560x560

710x710
MD-10

Medium Duty

Circular

450
500
560

600

70
70
70

70

50
50
50

50

50
50
50

50

50
50
50

50

560
610
670

710
HD-20

Heavy Duty
Rectangular

(Scrapper)
900x450
90
75
75
75
1060x610
HD-20

Heavy Duty

Square

560x560

90

75

75

75
720x720
HD-20

Heavy Duty

Circular

450
500
560

600

90
90
90

90

75
75
75

75

75
75
75

75

75
75
75

75

610
660
720

760
HD-20

Heavy Duty

Lamphole
350
90
75
75
75
510
EHD-35

Extra Heavy Duty
Rectangular
900x560
100
75
75
75
1060x720
EHD-35

Extra Heavy Duty
Square
560x560
100
75
75
75
720x720
EHD-35

Extra Heavy Duty

Circular

450
500
560

600

100
100
100

100

75
75
75

75

75
75
75

75

75
75
75

75

610
660
720

760