Outside Plant Filters
OUTSIDE PLANT FILTERS
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Outside Plant Filters




High efficiency, low pressure drop membrane air filters are the answer for enclosure engineers looking to take advantage of direct air cooling systems for electronics equipment protection. Custom Outside Plant Air Filters keep dust, water, wind driven rain and salt fog out of electronics enclosures that use fresh air and direct air cooling systems. Cabinets for copper, fiber, coax, ADSL, wireless, and power applications can now use outside air vented cooling systems in place of costly, inefficient closed air-to-air heat exchangers.


High efficiency outside plant filters allow designers to utilize ambient air to cool vented systems, increasing efficiency and reducing operating costs compared to closed systems with limited heat dissipation capacity, higher overall equipment cost and higher operating costs associated with condenser-equipped air conditioning systems. Outside Plant filters provide superior water and airborne contaminant protection in compliance with stringent industry standards including GR 487, NEMA, and IP enclosure standards. UAF provides pre-filters to extend filter life in a single, low-cost integrated assembly.


In addition to high efficiency Outside Plant filters, Universal Air Filter Company also manufactures foam and metal mesh flat panel filters for use in outdoor environments.


Applications

Communications - Telecom & Datacom

Computer Networking

Military / Defense

Industrial Machinery


Filtration Performance Data

Outside Plant Filters from Universal Air Filter comply with GR-487 standards in the following areas:

- Dust

- Wind Driven Rain

- Water Intrusion



Outside Plant membrane filters can help to meet the following enclosure ratings:

IP Ratings: IP50, IP51, IP52, IP54, IP55

NEMA Ratings: NEMA 3, NEMA 3R, NEMA 3S, NEMA 4, NEMA 5, NEMA 6


QUADRAFOAM
FILTRATION PERFORMANCE DATA

Models
FF-2X, FF-3, FF-5, FF-1025-B, Windowpane, Flex-Frame, Dual/EMI
0.25 in (6,35 mm)
Thick Foam Media

 

Models
FF-5X, FF-1050B, Windowpane, Flex-Frame, Dual/EMI
0.50 in (12,70 mm)
Thick Foam Media

 

Models
FF-2X, Windowpane, Flex-Frame, Dual/EMI
0.125 in (3,18 mm)
Thick Foam Media

10
PPI

25
PPI

45
PPI

60
PPI

 

10
PPI

25
PPI

45
PPI

60
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.05
(12,44)

0.07
(17,41)

0.12
(29,84)

 

0.03
(7,46)

0.08
(19,89)

0.16
(39,78)

0.25
(62,16)

 

0.04
(9,95)

0.12
(29,84)

 

Average Synthetic Dust Weight Arrestance (percent)

38

66

80

82

 

63

83

91

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

QUADRAFOAM II
FILTRATION PERFORMANCE DATA

Models
FF-2X, FF-3, FF-5, FF-1025-B, Windowpane, Flex-Frame, Dual/EMI
0.25 in (6,35 mm)
Thick Foam Media

 

Models
FF-5X, FF-1050B, Windowpane, Flex-Frame, Dual/EMI
0.50 in (12,70 mm)
Thick Foam Media

 

Models
FF-2X, Windowpane, Flex-Frame, Dual/EMI
0.125 in (3,18 mm)
Thick Foam Media

10
PPI

30
PPI

45
PPI

 

10
PPI

30
PPI

45
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.05
(12,44)

0.07
(17,41)

 

0.03
(7,46)

0.09
(22,38)

0.16
(39,78)

 

0.04
(9,95)

0.12
(29,84)

 

Average Synthetic Dust Weight Arrestance (percent)

38

66

80

 

63

83

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

EMI VENT PANEL
FILTRATION PERFORMANCE DATA

Models
HC-2X, Windowpane 0.125 in (3,18) x 0.125 in (3,18)
Thick Foam Media

 

Models
HC-3, WINDOWPANE 0.125 in (3,18) x 0.25in (6,35mm)
Thick Foam Media

 

Models
HC-5X 0.125 in (3,18) x 0.50in (12,70mm)
Thick Foam Media

Inital Resistance[in inches water gauge] (Pascals)

0.005
(1,24)

 

0.007
(1,74)

 

0.01
(2,49)

 

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

DUAL EMI AIR FILTERS - QUADRAFOAM
FILTRATION PERFORMANCE DATA

Models
FF-2X, FF-3, FF-5, FF-1025-B, Windowpane, Flex-Frame, Dual/EMI
0.25 in (6,35 mm)

Thick Foam Media

 

Models
FF-5X, FF-1050B, Windowpane, Flex-Frame, Dual/EMI
0.50 in (12,70 mm)

Thick Foam Media

 

Models
FF-2X, Windowpane, Flex-Frame, Dual/EMI
0.125 in (3,18 mm)

Thick Foam Media

10
PPI

25
PPI

45
PPI

60
PPI

 

10
PPI

25
PPI

45
PPI

60
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.05
(12,44)

0.07
(17,41)

0.12
(29,84)

 

0.03
(7,46)

0.08
(19,89)

0.16
(39,78)

0.25
(62,16)

 

0.04
(9,95)

0.12
(29,84)

 

Average Synthetic Dust Weight Arrestance (percent)

38

66

80

82

 

63

83

91

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

DUAL EMI AIR FILTERS - POLYESTER
FILTRATION PERFORMANCE DATA

Models
PE-2X, PE-3, PE-5, PE-1025-B, PFPE-25, Windowpane
UFM-25 --
0.25 In (6,35 mm)
Thick Foam Media

 

Models
PE-3, PE-5X, PE-1050-B, PFPE-50, Windowpane
UFM-50 / UPR --
0.50 in (12,70 mm)
Thick Foam Media

 

Models
PE-5X, PE-1050-B, Windowpane
UFM-100 --
1.00 in
(25,40 mm)
Thick Foam Media

UFM-25

UFM-50

UPR

UFM-100

UPR

Inital Resistance[in inches water gauge] (Pascals)

0.07
(17,41)

0.10 (24,86)

0.14 (34,81)

0.14
(34,81)

0.14
(34,81)

 

Average Synthetic Dust Weight Arrestance (percent)

74

80

83

89

83

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

DUAL EMI AIR FILTERS - UNIFOAM
FILTRATION PERFORMANCE DATA

Models
FF-2X, FF-3, FF-5, FF-1025-B, Windowpane, Flex-Frame, Dual/EMI
0.25 in (6,35 mm)
Thick Foam Media

 

Models
FF-5X, FF-1050B, Windowpane, Flex-Frame, Dual/EMI
0.50 in (12,70 mm)
Thick Foam Media

 

Models
FF-2X, Windowpane, Flex-Frame, Dual/EMI
0.125 in (3,18 mm)
Thick Foam Media

10
PPI

25
PPI

45
PPI

60
PPI

 

10
PPI

25
PPI

45
PPI

60
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.03 (7,46)

0.07
(17,41)

0.12
(29,84)

 

0.03
(7,46)

0.08
(19,89)

0.16
(39,78)

0.25
(62,16)

 

0.04
(9,95)

0.12
(29,84)

 

Average Synthetic Dust Weight Arrestance (percent)

38

63

80

82

 

63

83

91

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

DUAL EMI AIR FILTERS - QUADRAFOAM II
FILTRATION PERFORMANCE DATA

Models
FF-2X, FF-3, FF-5, FF-1025-B, Windowpane, Flex-Frame, Dual/EMI
0.25 in (6,35 mm)
Thick Foam Media

 

Models
FF-5X, FF-1050B, Windowpane, Flex-Frame, Dual/EMI
0.50 in (12,70 mm)
Thick Foam Media

 

Models
FF-2X, Windowpane, Flex-Frame, Dual/EMI
0.125 in
(3,18 mm)
Thick Foam Media

10
PPI

30
PPI

45
PPI

 

10
PPI

30
PPI

45
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.05
(12,44)

0.07
(17,41)

 

0.03
(7,46)

0.09
(22,38)

0.16
(39,78)

 

0.04
(9,95)

0.12
(29,84)

 

Average Synthetic Dust Weight Arrestance (percent)

38

66

80

 

63

83

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

WINDOWPANE AIR FILTERS - QUADRAFOAM
FILTRATION PERFORMANCE DATA

Models
FS-XX25
0.25 in (6,35 mm)
Thick Foam Media

 

Models
FS-XX50
0.50 in (12,70 mm)
Thick Foam Media

 

Models
FS-XX12
0.125 in (3,18 mm)
Thick Foam Media

10
PPI

25
PPI

45
PPI

60
PPI

 

10
PPI

25
PPI

45
PPI

60
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.05
(12,44)

0.07
(17,41)

0.12
(29,84)

 

0.03
(7,46)

0.08
(19,89)

0.16
(39,78)

0.25
(62,16)

 

0.04
(9,95)

0.12
(29,84)

 

Average Synthetic Dust Weight Arrestance (percent)

38

66

80

82

 

63

83

91

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

WINDOWPANE AIR FILTERS - POLYESTER
FILTRATION PERFORMANCE DATA

Models
FS-XX25
UFM-25 --
0.25 In (6,35 mm)
Thick Foam Media

 

Models
FS-XX50
0.50 in (12,70 mm)
Thick Foam Media

 

Models
FS-XX12
1.00 in
(25,40 mm)
Thick Foam Media

UFM-25

UFM-50

UPR

UFM-
100

UPR

Inital Resistance[in inches water gauge] (Pascals)

0.07
(17,41)

0.10
(24,86)

0.14
(34,81)

0.14
(34,81)

0.14
(34,81)

 

Average Synthetic Dust Weight Arrestance (percent)

74

80

83

89

83

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

WINDOWPANE AIR FILTERS - UNIFOAM
FILTRATION PERFORMANCE DATA

Models
FS-XX25
0.25 in (6,35 mm)
Thick Foam Media

 

Models
FS-XX50
0.50 in (12,70 mm)
Thick Foam Media

 

Models
FS-XX12
0.125 in (3,18 mm)
Thick Foam Media

10
PPI

25
PPI

45
PPI

60
PPI

 

10
PPI

25
PPI

45
PPI

60
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.03 (7,46)

0.07
(17,41)

0.12
(29,84)

 

0.03
(7,46)

0.08
(19,89)

0.16
(39,78)

0.25
(62,16)

 

0.04
(9,95)

0.12
(29,84)

 

Average Synthetic Dust Weight Arrestance (percent)

38

63

80

82

 

63

83

91

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

WINDOWPANE AIR FILTERS - QUADRAFOAM II
FILTRATION PERFORMANCE DATA

Models
FS-XX25
0.25 in (6,35 mm)
Thick Foam Media

 

Models
FS-XX50
0.50 in (12,70 mm)
Thick Foam Media

 

Models
FS-XX12
0.125 in
(3,18 mm)
Thick Foam Media

10
PPI

30
PPI

45
PPI

 

10
PPI

30
PPI

45
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.05
(12,44)

0.07
(17,41)

 

0.03
(7,46)

0.09
(22,38)

0.16
(39,78)

 

0.04
(9,95)

0.12
(29,84)

 

Average Synthetic Dust Weight Arrestance (percent)

38

66

80

 

63

83

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

PYROCIDE VENT PANELS
FILTRATION PERFORMANCE DATA

Models
HC-2X, Windowpane 0.125 in (3,18) x 0.125 in (3,18)
Thick Foam Media

Models
HC-3, WINDOWPANE 0.125 in (3,18) x 0.25in (6,35mm)
Thick Foam Media

Models
HC-5X 0.125 in (3,18) x 0.50in (12,70mm)
Thick Foam Media

Inital Resistance[in inches water gauge] (Pascals)

0.006
(1,49)

 

0.008
(1,99)

 

0.01
(2,49)

 

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

FLEX-FRAME AIR FILTERS - QUADRAFOAM
FILTRATION PERFORMANCE DATA

Models
FF-2X, FF-3, FF-5, FF-1025-B, Windowpane, Flex-Frame, Dual/EMI
0.25 in (6,35 mm)
Thick Foam Media

 

Models
FF-5X, FF-1050B, Windowpane, Flex-Frame, Dual/EMI
0.50 in (12,70 mm)
Thick Foam Media

 

Models
FF-2X, Windowpane, Flex-Frame, Dual/EMI
0.125 in (3,18 mm)
Thick Foam Media

10
PPI

25
PPI

45
PPI

60
PPI

 

10
PPI

25
PPI

45
PPI

60
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.05
(12,44)

0.07
(17,41)

0.12
(29,84)

 

0.03
(7,46)

0.08
(19,89)

0.16
(39,78)

0.25
(62,16)

 

0.04
(9,95)

0.12
(29,84)

 

Average Synthetic Dust Weight Arrestance (percent)

38

66

80

82

 

63

83

91

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

FLEX-FRAME AIR FILTERS - UNIFOAM
FILTRATION PERFORMANCE DATA

Models
FF-2X, FF-3, FF-5, FF-1025-B, Windowpane, Flex-Frame, Dual/EMI
0.25 in (6,35 mm)
Thick Foam Media

 

Models
FF-5X, FF-1050B, Windowpane, Flex-Frame, Dual/EMI
0.50 in (12,70 mm)
Thick Foam Media

 

Models
FF-2X, Windowpane, Flex-Frame, Dual/EMI
0.125 in (3,18 mm)
Thick Foam Media

10
PPI

25
PPI

45
PPI

60
PPI

 

10
PPI

25
PPI

45
PPI

60
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.03 (7,46)

0.07
(17,41)

0.12
(29,84)

 

0.03
(7,46)

0.08
(19,89)

0.16
(39,78)

0.25
(62,16)

 

0.04
(9,95)

0.12
(29,84)

 

Average Synthetic Dust Weight Arrestance (percent)

38

63

80

82

 

63

83

91

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

FLEX-FRAME AIR FILTERS - QUADRAFOAM II
FILTRATION PERFORMANCE DATA

Models
FF-2X, FF-3, FF-5, FF-1025-B, Windowpane, Flex-Frame, Dual/EMI
0.25 in (6,35 mm)
Thick Foam Media

 

Models
FF-5X, FF-1050B, Windowpane, Flex-Frame, Dual/EMI
0.50 in (12,70 mm)
Thick Foam Media

 

Models
FF-2X, Windowpane, Flex-Frame, Dual/EMI
0.125 in
(3,18 mm)
Thick Foam Media

10
PPI

30
PPI

45
PPI

 

10
PPI

30
PPI

45
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.05
(12,44)

0.07
(17,41)

 

0.03
(7,46)

0.09
(22,38)

0.16
(39,78)

 

0.04
(9,95)

0.12
(29,84)

 

Average Synthetic Dust Weight Arrestance (percent)

38

66

80

 

63

83

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

POLYESTER AIR FILTERS
FILTRATION PERFORMANCE DATA

Models
PE-2X, PE-3, PE-5, PE-1025-B, Polyfold, Windowpane UFM-25 -- 0.25 In (6,35 mm)
Thick Foam Media

Models
PE-3, PE-5X, PE-1050-B, Polyfold, Windowpane UFM-50 / UPR -- 0.50 in (12,70 mm)
Thick Foam Media

Models
PE-5X, PE-1050-B, Polyfold, Windowpane UFM-100 -- 1.00 in (25,40 mm)
Thick Foam Media

UFM-25

UFM-50

UPR

UFM-
100

UPR

Inital Resistance[in inches water gauge] (Pascals)

0.07
(17,41)

0.10
(24,86)

0.14
(34,81)

0.14
(34,81)

0.14
(34,81)

 

Average Synthetic Dust Weight Arrestance (percent)

74

80

83

89

83

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

POLYFOLD AIR FILTERS - QUADRAFOAM
FILTRATION PERFORMANCE DATA

Models
PF-1025, PF-2525, PF-4525, PF-6025
0.25 in (6,35 mm)
Thick Foam Media

 

Models
PF-1050, PF-2550, PF-4550, PF-6050
0.50 in (12,70 mm)

Thick Foam Media

 

Models
PF-1012, PF-2512, PF-4512, PF-6012
0.125 in (3,18 mm)

Thick Foam Media

10
PPI

25
PPI

45
PPI

60
PPI

 

10
PPI

25
PPI

45
PPI

60
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.04 (9,95)

0.05 (12,44)

0.10 (24,87)

 

0.03 (7,46)

0.07 (17,41)

0.12 (29,84)

0.25 (62,16)

 

0.03
(7,46)

0.10
(24,87)

 

Average Synthetic Dust Weight Arrestance (percent)

38

66

80

82

 

63

83

91

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

POLYFOLD AIR FILTERS - POLYESTER
FILTRATION PERFORMANCE DATA

Models
PFPE-25
UFM-25 -- 0.25 In (6,35 mm)
Thick Foam Media

 

Models
PFPE-50
UFM-50 / UPR -- 0.50 in (12,70 mm)
Thick Foam Media

 

Models
PFPE-100
UFM-100 -- 1.00 in (25,40 mm)
Thick Foam Media

UFM-25

UFM-50

UFM-100

Inital Resistance[in inches water gauge] (Pascals)

0.05
(12,44)

0.09
(22,38)

0.12
(29,84)

 

Average Synthetic Dust Weight Arrestance (percent)

74

88

89

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

POLYFOLD AIR FILTERS - UNIFOAM
FILTRATION PERFORMANCE DATA

Models
PF-1025, PF-2525, PF-4525, PF-6025
0.25 in (6,35 mm)
Thick Foam Media

 

Models
PF-1050, PF-2550, PF-4550, PF-6050
0.50 in (12,70 mm)

Thick Foam Media

 

Models
PF-1012, PF-2512, PF-4512, PF-6012
0.125 in (3,18 mm)

Thick Foam Media

10
PPI

25
PPI

45
PPI

60
PPI

 

10
PPI

25
PPI

45
PPI

60
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.04 (9,95)

0.05 (12,44)

0.10 (24,87)

 

0.03 (7,46)

0.07 (17,41)

0.12 (29,84)

0.25 (62,16)

 

0.03
(7,46)

0.10
(24,87)

 

Average Synthetic Dust Weight Arrestance (percent)

38

66

80

82

 

63

83

91

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

POLYFOLD AIR FILTERS - QUADRAFOAM II
FILTRATION PERFORMANCE DATA

Models
PF-1025, PF-2525, PF-4525, PF-6025
0.25 in (6,35 mm)
Thick Foam Media

 

Models
PF-1050, PF-2550, PF-4550, PF-6050
0.50 in (12,70 mm)
Thick Foam Media

 

Models
PF-1012, PF-2512, PF-4512, PF-6012
0.125 in
(3,18 mm)
Thick Foam Media

10
PPI

30
PPI

45
PPI

 

10
PPI

30
PPI

45
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.04 (9,95)

0.05 (12,44)

 

0.03 (7,46)

0.07 (17,41)

0.12 (29,84)

 

0.03
(7,46)

0.10
(24,87)

 

Average Synthetic Dust Weight Arrestance (percent)

38

66

80

 

63

83

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

UNIFOAM AIR FILTERS
FILTRATION PERFORMANCE DATA

Models
FF-2X, FF-3, FF-5, FF-1025-B, Windowpane, Flex-Frame, Dual/EMI
0.25 in (6,35 mm)
Thick Foam Media

 

Models
FF-5X, FF-1050B, Windowpane, Flex-Frame, Dual/EMI
0.50 in (12,70 mm)
Thick Foam Media

 

Models
FF-2X, Windowpane, Flex-Frame, Dual/EMI
0.125 in (3,18 mm)
Thick Foam Media

10
PPI

25
PPI

45
PPI

60
PPI

 

10
PPI

25
PPI

45
PPI

60
PPI

 

45
PPI

80
PPI

Inital Resistance[in inches water gauge] (Pascals)

0.01
(2,49)

0.03
(7,46)

0.07
(17,41)

0.12
(29,84)

 

0.03
(7,46)

0.08
(19,89)

0.16
(39,78)

0.25
(62,16)

 

0.04
(9,95)

0.12
(29,84)

 

Average Synthetic Dust Weight Arrestance (percent)

38

63

80

82

 

63

83

91

91

 

65

81

Tests performed according to ASHRAE Standard 52.1 -1992 
at 300 feet per minute (1,53 m/s) face velocity.

METAL MESH
FILTRATION PERFORMANCE DATA

Models
FF-2X, FF-3, FF-5, FF-1025-B, Windowpane
0.25 in (6,35 mm)
Thick Metal Mesh Media

 

Models
FF-5X, FF-1050B, Windowpane
0.50 in (12,70 mm)
Thick Metal Mesh Media

Initial Resistance[in inches water gauge] (Pascals)

0.07
(17,41)

 

0.14
(34,82)

 

Average Synthetic Dust Weight Arrestance (percent)

46

 

62

Tests performed according to ASHRAE Standard 52.1 -1992
at 300 feet per minute (1,53 m/s) face velocity.