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Shielded Air Filter Panels

MAJR’s line of custom air filters is designed to aid in applications where the need for EMI/RFI shielding is marginal and the filtering of dust particulate and foreign object debris is essential. Our high-efficiency shielded air filters are supplied ready to install with an EMI/RFI gasket as an integral part of the filter assembly. The rigidity of the mounting frame makes installation and removal for cleaning an easy task. The filter media used in the panels can be supplied as a dry or wet filter. Keep in mind that impingement of fine dust particles on filters with a glutinous oil coating is greatly enhanced.

Features:

  • Multi- Purpose – Shielding, Air flow, and Dust filtration – Installation of the shielded air filter into the electronic enclosure provides an effective dust filter with minimal resistance to air flow while simultaneously providing some attenuation of electromagnetic interference
  • Standard Configurations –MAJR offers a wide variety of standard sizes, as seen below, which can reduce lead time and setup charges for our customers.
  • Ease of Installation – Our Shielded air filters are supplied with EMI/RFI gasket and mounting holes or captive fasteners — ready for installation into any electronic cabinet.
  • Built to Your Specifications – Many applications require a unique shape or mounting configuration. MAJR’s engineering group can assist with custom shielded air filter designs to accommodate any size requirement.

Design Data:

Figure 1

EMI shielded air filter

 

 air_filtration_panels_02

Table 1 – Style 3031 EMI/RFI Shielded Air Filtration Panel with Through Holes

OPENING Part Number
Dry Filter
FRAME DIMENSIONS
Width Length AA BB A B C D E F G H J
 3.00 3.00 (76.2) 3031-20303-57 4.00 (101.6) 4.00 (101.6) 3.50 (88.9) 3.50 (88.9) 1.75 (44.5) 1.75 (44.5) 4
 3.00 5.00 (127.0) 3031-20305-57 6.00 (152.4) 4.00 (101.6) 5.50 (139.7) 3.50 (88.9) 1.00 (25.4) 1.75 (44.5) 1 3.50 (88.9) 6
 3.00 11.00 (279.4) 3031-20311-57 12.00 (304.8) 4.00 (101.6) 11.50 (292.1) 3.50 (88.9) 1.25 (31.8) 1.75 (44.5) 3 3.00 (76.2) 10
 4.00 4.00 (101.6) 3031-20404-57 5.00 (127.0) 5.00 (127.0) 4.50 (114.3) 4.50 (114.3) .750 (19.1) 2.25 (57.2) 1 3.00 (76.2) 6
 4.00 9.00 (228.6) 3031-20409-57 10.00 (254.0) 5.00 (127.0) 9.50 (241.3) 4.50 (114.3) 1.25 (31.8) 2.25 (57.2) 2 3.50 (88.9) 8
 5.00 5.00 (127.0)) 3031-20505-57 6.00 (152.4) 6.00 (152.4) 5.50 (139.7) 5.50 (139.7) 1.00 (25.4) 1.00 (25.4) 1 3.50 (88.9) 1 3.50 (88.9) 8
 5.00 11.00 (279.4) 3031-20511-57 12.00 (304.8) 6.00 (152.4) 11.50 (292.1) 5.50 (139.7) 1.25 (31.8) 1.00 (25.4) 3 3.00 (76.2) 1 3.50 (88.9) 1
 6.00 6.00 (152.4) 3031-20606-57 7.00 (177.8) 7.00 (177.8) 6.50 (165.1) 6.50 (165.1) 1.50 (38.1) 1.50 (38.1) 1 3.50 (88.9) 1 3.50 (88.9) 28
6.00 9.00 (228.6) 3031-20609-57 10.00 (254.0) 7.00 (177.8) 9.50 (241.3) 6.50 (165.1) 1.25 (31.8) 1.50 (38.1) 2 3.50 (88.9) 1 3.50 (88.9) 10
 7.00 14.00 (355.6) 3031-20714-57 15.00 (381.0) 8.00 (203.2) 14.50 (368.3) 7.50 (190.5) .750 (19.1) .750 (19.1) 4 3.25 (82.6 2 3.00 (76.2) 16
 9.00 9.00 (228.6) 3031-20909-57 10.00 (254.0) 10.00 (254.0) 9.50 (241.3) 9.50 (241.3) 1.25 (31.8) 1.25 (31.8) 2 3.50 (88.9) 2 3.50 (88.9) 12
 11.00 11.00 (279.4) 3031-21111-57 12.00 (304.8) 12.00 (304.8) 11.50 (292.1) 11.50 (292. 1.25 (31.8) 1.25 (31.8) 3 3.00 (76.2) 3 3.00 (76.2) 16
 14.00 14.00 (335.6) 3031-21414-57 15.00 (381.0) 15.00 (381.0) 14.50 (368.3) 14.50 (368.3) 1.25 (31.8) 1.25 (31.8) 4 3.00 (76.2) 4 3.00 (76.2) 20
 18.00 18.00 (457.2) 3031-21818-57 19.00 (482.6) 19.00 (482.6) 18.50 (469.9) 18.50 (469.9) 1.75 (44.5) 1.75 (44.5) 5 3.00 (76.2) 5 3.00 (76.2) 24

Change -57 to -58 for Oil Coating.

 

Table 2 – Style 3033 EMI/RFI Shielded Air Filtration Panel with Through Holes

OPENING Part Number
Dry Filter
FRAME DIMENSIONS
Width Length AA BB A B C D E F G H J
3.00 (76.2) 3.00 (76.2) 3033-20303-57 4.25 (107.9) 4.25 (107.9) 3.50 (88.9) 3.50 (88.9) 1.75 (44.5) 1.75 (44.5) 4
3.00 (76.2) 5.00 (127.0) 3033-20305-57 6.25 (158.8) 4.25 (107.9) 5.50 (139.7) 3.50 (88.9) 1.00 (25.4) 1.75 (44.5) 1 3.50 (88.9) 6
3.00 (76.2) 11.00 (279.4) 3033-20311-57 12.25 (311.2) 4.25 (107.9) 11.50 (292.1) 3.50 (88.9) 1.25 (31.8) 1.75 (44.5) 3 3.00 (76.2) 10
4.00 (101.6) 4.00 (101.6) 3033-20404-57 5.25 (133.4) 5.25 (133.4) 4.50 (114.3) 4.50 (114.3) .750 (19.1) 2.25 (57.2) 1 3.00 (76.2) 6
4.00 (101.6) 9.00 (228.6) 3033-20409-57 10.25 (260.4) 5.25 (133.4) 9.50 (241.3) 4.50 (114.3) 1.25 (31.8) 2.25 (57.2) 2 3.50 (88.9) 8
5.00 (127.0) 5.00 (127.0)) 3033-20505-57 6.25 (158.6) 6.25 (158.6) 5.50 (139.7) 5.50 (139.7) 1.00 (25.4) 1.00 (25.4) 1 3.50 (88.9) 1 3.50 (88.9) 8
5.00 (127.0) 11.00 (279.4) 3033-20511-57 12.25 (311.2) 6.25 (158.6) 11.50 (292.1) 5.50 (139.7) 1.25 (31.8) 1.00 (25.4) 3 3.00 (76.2) 1 3.50 (88.9) 12
6.00 (152.4) 6.00 (152.4) 3033-20606-57 7.25 (184.2) 7.25 (184.2) 6.50 (165.1) 6.50 (165.1) 1.50 (38.1) 1.50 (38.1) 1 3.50 (88.9) 1 3.50 (88.9) 8
6.00 (152.4) 9.00 (228.6) 3033-20609-57 10.25 (260.4) 7.25 (184.2) 9.50 (241.3) 6.50 (165.1) 1.25 (31.8) 1.50 (38.1) 2 3.50 (88.9) 1 3.50 (88.9) 10
7.00 (177.8) 14.00 (355.6) 3033-20714-57 15.25 (387.4) 8.25 (209.6) 14.50 (368.3) 7.50 (190.5) 1.50 (38.1) 1.50 (38.1) 3 3.50 (88.9) 1 3.50 (88.9) 16
9.00 (228.6) 9.00 (228.6) 3033-20909-57 10.25 (260.4) 10.25 (260.4) 9.50 (241.3) 9.50 (241.3) 1.25 (31.8) 1.25 (31.8) 2 3.50 (88.9) 2 3.50 (88.9) 12
11.00 (279.4) 11.00 (279.4) 3033-21111-57 12.25 (311.2) 12.25 (311.2) 11.50 (292.1) 11.50 (292. 1.25 (31.8) 1.25 (31.8) 3 3.00 (76.2) 3 3.00 (76.2) 16
14.00 (355.6) 14.00 (335.6) 3033-21414-57 15.25 (387.4) 15.25 (387.4) 14.50 (368.3) 14.50 (368.3) 1.25 (31.8) 1.25 (31.8) 4 3.00 (76.2) 4 3.00 (76.2) 20
18.00 (457.2) 18.00 (457.2) 3033-21818-57 19.25 (488.9) 19.25 (488.9) 18.50 (469.9) 18.50 (469.9) 1.75 (44.5) 1.75 (44.5) 5 3.00 (76.2) 5 3.00 (76.2) 24

Change -57 to -58 for Oil Coating.

 

Table 3 – Style 3036 EMI/RFI Shielded Air Filtration Panel with Through Holes

OPENING Part Number
Dry Filter
FRAME DIMENSIONS
Width Length AA BB A B C D E F G H J
3.00 (76.2) 3.00 (76.2) 3036-20303-57 5.25 (133.4) 5.25 (133.4) 4.50 (114.3) 4.50 (114.3) 2.25 (57.2) 2.25 (57.2) 4
3.00 (76.2) 5.00 (127.0) 3036-20305-57 7.25 (184.15 5.25 (133.4) 6.50 (165.2) 4.50 (114.3) 1.75 (44.5) 2.25 (57.2) 1 3.50 (88.9) 6
3.00 (76.2) 11.00 (279.4) 3036-20311-57 13.25 (336.6) 5.25 (133.4) 12.50 (317.5) 4.50 (114.3) 1.75 (44.5) 2.25 (57.2) 3 3.00 (76.2) 10
4.00 (101.6) 4.00 (101.6) 3036-20404-57 6.25 (158.8) 6.25 (158.8) 5.50 (139.7) 5.50 (139.7) 1.00 (25.4) 1.00 (25.4) 1 3.50 (88.9) 1 3.50 (88.9) 8
4.00 (101.6) 9.00 (228.6) 3036-20409-57 11.25 (366.6) 6.25 (158.8) 10.50 (266.7) 5.50 (139.7) .75 (19.1) 1.00 (25.4) 3 3.00 (76.2) 1 3.50 (88.9) 12
5.00 (127.0) 5.00 (127.0)) 3036-20505-57 7.25 (184.15 7.25 (184.15 6.50 (165.2) 6.50 (165.2) .50 (12.7) 1.50 (38.1) 2 2.75 (69.9) 1 3.50 (88.9) 10
5.00 (127.0) 11.00 (279.4) 3036-20511-57 13.25 (336.6) 7.25 (184.15 12.50 (317.5) 6.50 (165.2) 1.00 (25.4) 1.50 (38.1) 3 3.50 (88.9) 1 3.50 (88.9) 12
6.00 (152.4) 6.00 (152.4) 3036-20606-57 8.25 (209.6) 8.25 (209.6) 7.50 (190.5) 7.50 (190.5) .75 (19.1) .75 (19.1) 2 3.00 (76.2) 2 3.00 (76.2) 12
6.00 (152.4) 9.00 (228.6) 3036-20609-57 11.25 (285.7) 8.25 (209.6) 10.50 (266.7) 7.50 (190.5) .75 (19.1) .75 (19.1) 2 3.00 (76.2) 2 3.00 (76.2) 14
7.00 (177.8) 14.00 (355.6) 3036-20714-57 16.25 (412.8) 9.25 (234.9) 15.50 (393.7) 8.50 (215.9) .75 (19.1) .75 (19.1) 4 3.50 (88.9) 2 3.50 (88.9) 16
9.00 (228.6) 9.00 (228.6) 3036-20909-57 11.25 (285.7) 11.25 (285.7) 10.50 (266.7) 10.50 (266.7) .75 (19.1) .75 (19.1) 3 3.00 (76.2) 3 3.00 (76.2) 16
11.00 (279.4) 11.00 (279.4) 3036-21111-57 13.25 (336.6) 13.25 (336.6) 12.50 (317.5) 12.50 (317.5) 1.00 (25.4) 1.00 (25.4) 3 3.50 (88.9) 3 3.50 (88.9) 16
14.00 (355.6) 14.00 (335.6) 3036-21414-57 16.25 (412.8) 16.25 (412.8) 15.50 (393.7) 15.50 (393.7) .75 (19.1) .75 (19.1) 4 3.50 (88.9) 4 3.50 (88.9) 20
18.00 (457.2) 18.00 (457.2) 3036-21818-57 20.25 (514.35) 20.25 (514.35 19.50 (495.3) 19.50 (495.3) .75 (19.1) .75 (19.1) 6 3.00 (76.2) 6 3.00 (76.2) 28

Change -57 to -58 for Oil Coating.

 

Technical Data:

 

Static Pressure Drop vs. Air Flow Resistance

EMI shielded air filter

The low resistance to air flow of these panels will minimize pressure drop within the cabinet allowing air to move freely through the intake while performing the desired dust filtration function. The curves in Figure 1 show the resistance per square inch for standard filter media.

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EMI Shielded Air Filters

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