Model 522-42

42 Openings
3" x 5" (76mm x 254mm)

Model 522-24

24 Openings
5" x 5" (127mm x 127mm)

Model 522-21

21 Openings
3" x 10" (76mm x 254mm)

Model 522-12

12 Openings
5" x 10" (127mm x 254mm)

Model 522-9

6 Openings
5" x 10" (127mm x 254mm)

3 Openings
10" x 10" (254mm x 254mm)

Model 522-6

6 Openings
10" x 10" (254mm x 254mm)