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Rectangular Silencer are designed for use with a rectangular inlet and outlet in case of using Absorption and Resonator - Absorption Silencer.

Rectangular silencers contain a formed outer shell c/w flanges, the interior baffles are fabricated from perforated sheets packed with absorption material at a controlled density to achieve the required silencing. Our flexible design provides Stoddard the opportunity to customize the dimensions and parameters for standard requirements or unique applications. Our Rectangular Silencers can be customized to suit a customer’s desired height, width, length, and size proportions.

All metallic parts are manufactured from carbon steel. Absorption material used is dependent upon the operating conditions. Additional connections, mounting brackets, special material, or special paint available are at extra cost.

Rectangular Silencers
Frequency	8" High	12" high	16" High	20" High	24" High	Length
63	4dB	2dB	2dB	2dB	2dB	2'
125	8dB	5dB	4dB	4dB	3dB	2'
250	14dB	9dB	7dB	6dB	6dB	2'
500	27dB	16dB	12dB	9dB	10dB	2'
1000	47dB	26dB	17dB	11dB	8dB	2'
2000	50dB	31dB	13dB	7dB	5dB	2'
4000	49dB	15dB	8dB	6dB	6dB	2'
8000	39dB	8dB	7dB	6dB	5dB	2'

Flow, CFM	Pressure Drop in W.C.
500	1.09	0.12	0.03	0.01	0.01
1000	4.35	0.47	0.12	0.05	0.03
5000	n/a	11.83	2.9	1.21	0.64

Frequency	8" High	12" high	16" High	20" High	24" High	Length
63	6dB	3dB	3dB	3dB	3dB	3'
125	10dB	6dB	5dB	4dB	5dB	3'
250	19dB	12dB	9dB	7dB	8dB	3'
500	37dB	23dB	16dB	13dB	14dB	3'
1000	50dB	38dB	25dB	17dB	11dB	3'
2000	50dB	45dB	17dB	9dB	6dB	3'
4000	50dB	20dB	9dB	8dB	7dB	3'
8000	49dB	11dB	8dB	7dB	6dB	3'
Flow, CFM	Pressure Drop in W.C.
500	1.56	0.17	0.04	0.02	0.01
1000	6.24	0.66	0.16	0.07	0.03
5000	n/a	16.62	4.00	1.65	0.87

Frequency	8" High	12" high	16" High	20" High	24" High	Length
63	7dB	4dB	3dB	3dB	3dB	4'
125	11dB	6dB	5dB	4dB	5dB	4'
250	23dB	15dB	11dB	9dB	9dB	4'
500	46dB	29dB	21dB	17dB	19dB	4'
1000	50dB	49dB	33dB	22dB	14dB	4'
2000	51dB	50dB	21dB	12dB	8dB	4'
4000	51dB	25dB	11dB	9dB	8dB	4'
8000	50dB	13dB	10dB	8dB	7dB	4'

Flow, CFM	Pressure Drop in W.C.
500	2.03	0.21	0.05	0.02	0.01
1000	8.14	0.86	0.20	0..08	0.04
5000	n/a	21.41	5.10	2.09	1.09

Frequency	8" High	12" high	16" High	20" High	24" High	Length
63	7dB	4dB	4dB	3dB	3dB	5'
125	12dB	7dB	6dB	5dB	5dB	5'
250	28dB	18dB	13dB	11dB	11dB	5'
500	50dB	36dB	26dB	21dB	23dB	5'
1000	51dB	50dB	40dB	28dB	17dB	5'
2000	52dB	50dB	25dB	14dB	9dB	5'
4000	51dB	29dB	13dB	10dB	9dB	5'
8000	50dB	19dB	11dB	9dB	8dB	5'

Flow, CFM	Pressure Drop in W.C.
500	2.51	0.26	0.06	0.03	0.01
1000	10.03	1.05	0.25	0.10	0.05
5000	n/a	26.21	6.21	2.53	1.32

Frequency	8" High	12" high	16" High	20" High	24" High	Length
63	8dB	4dB	4dB	3dB	3dB	6'
125	12dB	8dB	6dB	5dB	6dB	6'
250	28dB	21dB	15dB	12dB	12dB	6'
500	50dB	42dB	30dB	25dB	27dB	6'
1000	51dB	49dB	48dB	33dB	20dB	6'
2000	52dB	50dB	28dB	16dB	11dB	6'
4000	51dB	34dB	15dB	12dB	10dB	6'
8000	50dB	18dB	12dB	11dB	9dB	6'

Flow, CFM	Pressure Drop in W.C.
500	2.98	0.31	0.07	0.03	0.02
1000	11.93	1.24	0.29	0.12	0.06
5000	n/a	31.00	7.31	2.97	1.54

Frequency	8" High	12" high	16" High	20" High	24" High	Length
63	7dB	4dB	4dB	4dB	4dB	7'
125	15dB	9dB	7dB	6dB	6dB	7'
250	35dB	24dB	17dB	14dB	13dB	7'
500	49dB	47dB	35dB	28dB	31dB	7'
1000	50dB	49dB	49dB	38dB	23dB	7'
2000	51dB	50dB	31dB	18dB	12dB	7'
4000	51dB	38dB	16dB	13dB	11dB	7'
8000	50dB	20dB	14dB	12dB	10dB	7'

Flow, CFM	Pressure Drop in W.C.
500	3.46	0.36	0.08	0.03	0.02
1000	13.82	1.43	0.34	0.14	0.07
5000	n/a	35.79	8.41	3.41	1.77

Stoddard Silencers Rectangular Enclosures

© Stoddard Silencers of Canada Inc. 2008
491 Brimley Road, Unit 1 // Scarborough, Ontario // Canada M1J 1A4
http://www.stoddardsilencers.com // info@stoddardsilencers.com