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Page Title:
Table 1. Dimensions, Nominal Airflow Ratings, and Maximum Resistance for typical HEPA Filtersa |
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|  DOE-STD-3020-97
TABLE 1. Dimensions, Nominal Airflow Ratings, and Maximum
Resistance for typical HEPA Filtersa
Dimension
Dimension
Nominal Airflow
Maximum
Size
in inches
in millimeters
Rating
m3/hr
cfm
in.wg
Pa
1
8x8x3-1/16
203x203x78
25
42
1.3
325
2
8x8x5-7/8
203x203x149
50
85
1.3
325
3
12x12x5-7/8
305x305x149
125
212
1.3
325
4
24x24x5-7/8
610x610x149
500
850
1.0
250
5
24x24x11-1/2
610x610x292
1000
1700
1.0
250
6
24x24x11-1/2
610x610x292
1250
2125
1.0
250
7b,c
24x24x11-1/2
610x610x292
1500
2550
1.3
325
8d
610x610x292
2000
3400
1.3
325
24x24x11-1/2
9
305x305x292
250
425
1.0
250
12x12x11-1/2
a
Unencapsulated.
b
Constructed with separators.
c
Constructed without separators.
d
Mini-pleat design.
Note: HEPA filters not listed above (round, rectangular, radial, etc.) which conform to the
requirements listed in this standard (5.2 performance requirements, 5.3 materials
requirements, and 5.4 filter construction) are acceptable for use at DOE nuclear facilities.
8
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