M21 Legacy Chamber Silencers
17 to 20 dBA Noise Reduction
Use a model M21 in residential and light industrial areas where background noise is relatively high and constant and the need for higher degrees of silencing is minimal. Example: In residential neighborhoods having high traffic or light industry with relatively constant background noise. Residents in these areas are typically accustomed to the noise or make some efforts to shield themselves from the ever present background noise. Use of an M21 can keep engine exhaust noise within existing levels.
Typical Applications: Internal combustion engine intakes and exhausts, blower intakes and discharges and vacuum pump discharges
Features
- Advanced acoustical design
- Heavy duty, all welded construction and long service life
- Easily installed in any position
- Prime coated exterior finish
Options / Accessories
- Explosion relief cover
- Flexible connectors
- Companion flanges
- Cleanout openings
- Side inlet(s)
- Horizontal or vertical support arrangements
- Special paint
- Stainless steel construction
Attenuation Curves



To download the Maxim M21 spec page click here
C Size | A | B | N Min | N Max | O | P | Est Wt | Drawing | ||
4 | 14 | 34 | 5.5 | 14 | 10 | 31 3/16 | 80 | |||
5 | 16 | 39 | 6.5 | 16 | 11 | 36 3/16 | 110 | |||
6 | 18 | 45 | 7 | 19 | 12 | 42 5/16 | 145 | |||
8 | 22 | 56 | 8.5 | 25 | 14 | 53 3/8 | 265 | |||
10 | 26 | 159 | 10.5 | 24.5 | 16.5 | 56 | 380 | |||
12 | 30 | 69 | 12 | 30 | 18.5 | 66 1/8 | 570 | |||
14 | 36 | 77 | 14 | 33 | 21.5 | 74 1/4 | 745 | |||
16 | 40 | 87 | 17 | 39 | 23.5 | 84 1/2 | 1090 | |||
18 | 45 | 100 | 19 | 44 | 26.5 | 97 | 1430 | |||
20 | 50 | 108 | 21 | 47 | 29 | 105 1/4 | 1790 | |||
22 | 54 | 116 | 22 | 51 | 31 | 113 1/4 | 2210 | |||
24 | 60 | 128 | 24 | 57 | 34 | 125 1/4 | 2645 | |||
26 | 64 | 136 | 26 | 62 | 36 | 133 1/2 | 2950 | |||
28 | 68 | 151 | 27 | 70 | 38 | 148 3/4 | 3840 | |||
30 | 72 | 162 | 29 | 75 | 40 | 159 3/4 | 4470 | |||
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