Table 5.5 Axial Flow Rectangular HEPA Filters With Inlet/Outlet Connections(s)- Nominal Sizes and Ratings

DOE-STD-3020-2005

TABLE 5.5

AXIAL FLOW RECTANGULAR HEPA FILTERS WITH INLET/OUTLET

CONNECTIONS(S) - NOMINAL SIZES AND RATINGS

(Note1)

Size

Maximum Rated Air Flow

Maximum Resistance (Note

(Note 2)

(Note 4)

(m3/hr)

(Inches)

(mm)

(ACFM)

In wg

8 x 8 x 10

203 x 203 x 254

136

1.3

325

12 x 12 x 12

305 x 305 x 305

125

212

1.3

325

12 x 12 x 16

305 x 305 x 406

250

425

1.3

325

24 x 24 x 12

610 x 610 x 305

500

850

1.3

325

24 x 24 x 16

610 x 610 x 406

1000

1700

1.3

325

Notes:

1. Reprinted from ASME AG-1, by permission of the American Society of Mechanical

2. Dimensions are height by width by depth. Depth includes the casing only and does not

include the length of the nipple connection(s).

3. Maximum resistance shall be as measured in ASME AG-1, FK-5621.

4. Rated airflow in ACFM is based on tests performed indoors at atmospheric pressure

close to sea level. The temperature and pressure under which the tests have been

conducted are to be recorded but are not to be used to correct rated flow.