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Table 12 — Filter Data
*Only 2-in. filters are available on size 03.
39L UNIT SIZE 03 06 08 10 12 15 18 21 25
Angle Filter Section
Filter Qty…Size (in.)
2…16x25 4…16x20
2…16x20
2…16x25
4…16x25 6…16x20 9…16x20 12…16x20
4…16x20
8…16x25
4…16x20
8…16x25
Nominal Face Area (sq ft) 5.56 8.89 10.00 11.11 13.33 20.00 26.67 31.11 31.11
Filter Mixing Box Section
Filter Qty…Size (in.)
2…16x25 4…16x20
2…16x20
2…16x25
4…16x25 6…16x20 9…16x20 9…16x20
3…16x20
6…16x25
4…16x20
8…16x25
Nominal Face Area (sq ft) 5.56 8.89 10.00 11.11 13.33 20.00 20.00 23.33 31.11
Flat Filter Section
Filter Qty…Size (in.)*
2…16x16 2…20x20 2…20x25
2…16x25
1…20x25
3…20x25 6…16x20
3…16x20
3…20x20
3…20x25
3…16x25
2…16x20
2…20x20
2…20x25
2…16x25
Nominal Face Area (sq ft) 3.56 5.56 6.94 9.03 10.42 13.33 15.00 18.75 22.50
16”
20”
25”
16”
20”
25” 25” 25”
16”
20” 20”
SIZE 21
SIZE 25
Fig. 43 — Filter Arrangement, 2-in. and 4-in. Flat