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

Part No* C Size A B N Min N Max O P Est Wt Drawing
M21-4 4 14 34 5.5 14 10 31 3/16 80
M21-5 5 16 39 6.5 16 11 36 3/16 110
M21-6 6 18 45 7 19 12 42 5/16 145
M21-8 8 22 56 8.5 25 1453 3/8 265
M21-10 10 26 159 10.5 24.5 16.5 56 380
M21-12 12 30 69 12 30 18.5 66 1/8 570
M21-14 14 36 77 14 33 21.5 74 1/4 745
M21-16 16 40 87 17 39 23.5 84 1/2 1090
M21-18 18 45 100 19 44 26.597 1430
M21-20 20 50 108 21 47 29 105 1/4 1790
M21-22 22 54 116 22 51 31 113 1/4 2210
M21-24 24 60 128 24 57 34125 1/4 2645
M21-26 26 64 136 26 62 36 133 1/2 2950
M21-28 28 68 151 27 70 38 148 3/4 3840
M21-30 30 72 162 29 75 40159 3/4 4470
  • All dimensions are in inches. All weights are in pounds. Weights are approximate.
  • Listed sound data is based on typical performance and should not be considered absolute.
  • *See nomenclature guide for additional information on part number creation.

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