Shielded Air Filtration Panels
Series No. 3000
MAJR’s line of custom shielded 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 filtration panels 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.
Standard Products
Table 1 – Style 3031 EMI/RFI Shielded Air Filtration Panel with Through Holes
Part Number | OPENING (inches) | FRAME DIMENSIONS (inches) | |||||||||||
Width | Length | AA | BB | A | B | C | D | E | F | G | H | J | |
3031-20303-57 | 3.00 | 3.00 | 4.00 | 4.00 | 3.50 | 3.50 | 1.75 | 1.75 | — | — | — | — | 4 |
3031-20305-57 | 3.00 | 5.00 | 6.00 | 4.00 | 5.50 | 3.50 | 1.00 | 1.75 | 1 | 3.50 | — | — | 6 |
3031-20311-57 | 3.00 | 11.00 | 12.00 | 4.00 | 11.50 | 3.50 | 1.25 | 1.75 | 3 | 3.00 | — | — | 10 |
3031-20404-57 | 4.00 | 4.00 | 5.00 | 5.00 | 4.50 | 4.50 | .750 | 2.25 | 1 | 3.00 | — | — | 6 |
3031-20409-57 | 4.00 | 9.00 | 10.00 | 5.00 | 9.50 | 4.50 | 1.25 | 2.25 | 2 | 3.50 | — | — | 8 |
3031-20505-57 | 5.00 | 5.00 | 6.00 | 6.00 | 5.50 | 5.50 | 1.00 | 1.00 | 1 | 3.50 | 1 | 3.50 | 8 |
3031-20511-57 | 5.00 | 11.00 | 12.00 | 6.00 | 11.50 | 5.50 | 1.25 | 1.00 | 3 | 3.00 | 1 | 3.50 | 1 |
3031-20606-57 | 6.00 | 6.00 | 7.00 | 7.00 | 6.50 | 6.50 | 1.50 | 1.50 | 1 | 3.50 | 1 | 3.50 | 28 |
3031-20609-57 | 6.00 | 9.00 | 10.00 | 7.00 | 9.50 | 6.50 | 1.25 | 1.50 | 2 | 3.50 | 1 | 3.50 | 10 |
3031-20714-57 | 7.00 | 14.00 | 15.00 | 8.00 | 14.50 | 7.50 | .750 | .750 | 4 | 3.25 | 2 | 3.00 | 16 |
3031-20909-57 | 9.00 | 9.00 | 10.00 | 10.00 | 9.50 | 9.50 | 1.25 | 1.25 | 2 | 3.50 | 2 | 3.50 | 12 |
3031-21111-57 | 11.00 | 11.00 | 12.00 | 12.00 | 11.50 | 11.50 | 1.25 | 1.25 | 3 | 3.00 | 3 | 3.00 | 16 |
3031-21414-57 | 14.00 | 14.00 | 15.00 | 15.00 | 14.50 | 14.50 | 1.25 | 1.25 | 4 | 3.00 | 4 | 3.00 | 20 |
3031-21818-57 | 18.00 | 18.00 | 19.00 | 19.00 | 18.50 | 18.50 | 1.75 | 1.75 | 5 | 3.00 | 5 | 3.00 | 24 |
Change -57 to -58 for Oil Coating.
Table 2 – Style 3033 EMI/RFI Shielded Air Filtration Panel with Through Holes
Part Number | OPENING (inches) | FRAME DIMENSIONS (inches) | |||||||||||
Width | Length | AA | BB | A | B | C | D | E | F | G | H | J | |
3033-20303-57 | 3.00 | 3.00 | 4.25 | 4.25 | 3.50 | 3.50 | 1.75 | 1.75 | — | — | — | — | 4 |
3033-20305-57 | 3.00 | 5.00 | 6.25 | 4.25 | 5.50 | 3.50 | 1.00 | 1.75 | 1 | 3.50 | — | — | 6 |
3033-20311-57 | 3.00 | 11.00 | 12.25 | 4.25 | 11.50 | 3.50 | 1.25 | 1.75 | 3 | 3.00 | — | — | 10 |
3033-20404-57 | 4.00 | 4.00 | 5.25 | 5.25 | 4.50 | 4.50 | .750 | 2.25 | 1 | 3.00 | — | — | 6 |
3033-20409-57 | 4.00 | 9.00 | 10.25 | 5.25 | 9.50 | 4.50 | 1.25 | 2.25 | 2 | 3.50 | — | — | 8 |
3033-20505-57 | 5.00 | 5.00 | 6.25 | 6.25 | 5.50 | 5.50 | 1.00 | 1.00 | 1 | 3.50 | 1 | 3.50 | 8 |
3033-20511-57 | 5.00 | 11.00 | 12.25 | 6.25 | 11.50 | 5.50 | 1.25 | 1.00 | 3 | 3.00 | 1 | 3.50 | 12 |
3033-20606-57 | 6.00 | 6.00 | 7.25 | 7.25 | 6.50 | 6.50 | 1.50 | 1.50 | 1 | 3.50 | 1 | 3.50 | 8 |
3033-20609-57 | 6.00 | 9.00 | 10.25 | 7.25 | 9.50 | 6.50 | 1.25 | 1.50 | 2 | 3.50 | 1 | 3.50 | 10 |
3033-20714-57 | 7.00 | 14.00 | 15.25 | 8.25 | 14.50 | 7.50 | 1.50 | 1.50 | 3 | 3.50 | 1 | 3.50 | 16 |
3033-20909-57 | 9.00 | 9.00 | 10.25 | 10.25 | 9.50 | 9.50 | 1.25 | 1.25 | 2 | 3.50 | 2 | 3.50 | 12 |
3033-21111-57 | 11.00 | 11.00 | 12.25 | 12.25 | 11.50 | 11.50 | 1.25 | 1.25 | 3 | 3.00 | 3 | 3.00 | 16 |
3033-21414-57 | 14.00 | 14.00 | 15.25 | 15.25 | 14.50 | 14.50 | 1.25 | 1.25 | 4 | 3.00 | 4 | 3.00 | 20 |
3033-21818-57 | 18.00 | 18.00 | 19.25 | 19.25 | 18.50 | 18.50 | 1.75 | 1.75 | 5 | 3.00 | 5 | 3.00 | 24 |
Change -57 to -58 for Oil Coating.
Table 3 – Style 3036 EMI/RFI Shielded Air Filtration Panel with Through Holes
Part Number | OPENING (inches) | FRAME DIMENSIONS (inches) | |||||||||||
Width | Length | AA | BB | A | B | C | D | E | F | G | H | J | |
3036-20303-57 | 3.00 | 3.00 | 5.25 | 5.25 | 4.50 | 4.50 ( | 2.25 | 2.25 | — | — | — | — | 4 |
3036-20305-57 | 3.00 | 5.00 | 7.25 | 5.25 | 6.50 | 4.50 | 1.75 | 2.25 | 1 | 3.50 | — | — | 6 |
3036-20311-57 | 3.00 | 11.00 | 13.25 | 5.25 | 12.50 | 4.50 ( | 1.75 | 2.25 | 3 | 3.00 | — | — | 10 |
3036-20404-57 | 4.00 | 4.00 | 6.25 | 6.25 | 5.50 | 5.50 | 1.00 | 1.00 | 1 | 3.50 | 1 | 3.50 | 8 |
3036-20409-57 | 4.00 | 9.00 | 11.25 | 6.25 | 10.50 | 5.50 | .75 | 1.00 | 3 | 3.00 | 1 | 3.50 | 12 |
3036-20505-57 | 5.00 | 5.00 | 7.25 | 7.25 | 6.50 | 6.50 | .50 | 1.50 | 2 | 2.75 | 1 | 3.50 | 10 |
3036-20511-57 | 5.00 | 11.00 | 13.25 | 7.25 | 12.50 | 6.50 | 1.00 | 1.50 | 3 | 3.50 | 1 | 3.50 | 12 |
3036-20606-57 | 6.00 | 6.00 | 8.25 | 8.25 | 7.50 | 7.50 | .75 | .75 | 2 | 3.00 | 2 | 3.00 | 12 |
3036-20609-57 | 6.00 | 9.00 | 11.25 | 8.25 | 10.50 | 7.50 | .75 | .75 | 2 | 3.00 | 2 | 3.00 | 14 |
3036-20714-57 | 7.00 | 14.00 | 16.25 | 9.25 | 15.50 | 8.50 | .75 | .75 | 4 | 3.50 | 2 | 3.50 | 16 |
3036-20909-57 | 9.00 | 9.00 | 11.25 | 11.25 | 10.50 | 10.50 | .75 | .75 | 3 | 3.00 | 3 | 3.00 | 16 |
3036-21111-57 | 11.00 | 11.00 | 13.25 | 13.25 | 12.50 | 12.50 | 1.00 | 1.00 | 3 | 3.50 | 3 | 3.50 | 16 |
3036-21414-57 | 14.00 | 14.00 | 16.25 | 16.25 | 15.50 | 15.50 | .75 | .75 | 4 | 3.50 | 4 | 3.50 | 20 |
3036-21818-57 | 18.00 | 18.00 | 20.25 | 20.25 | 19.50 | 19.50 | .75 | .75 | 6 | 3.00 | 6 | 3.00 | 28 |
Change -57 to -58 for Oil Coating.
Technical Info
Table 1 – Style 3031 EMI/RFI Shielded Air Filtration Panel with Through Holes
Shielding Effectiveness dB | Field | Material Code – 57 Frequency |
|||||
1 MHz | 10 MHz | 100 MHz | 500 MHz | 1 GHz | 10 GHz | ||
E | 40 | 35 | – | – | – | – | |
PW | – | – | 35 | 35 | 30 | 20 |
The values in Table 1 show shielding characteristics for standard MAJR shielded air filters. Note that the data indicated is based on a unit whose opening was 12.00 x 12.00 (305 x 305 mm) and tested under laboratory conditions.
Static Pressure Drop vs. Air Flow Resistance
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.