Rectangular Attenuators

Products

Attenuators By Types

Tapered

N2T - Rectangular Attenuators with Tapered Splitters

Features

Fantech's N2T series rectangular attenuators with 200mm thick tapered splitters are available to suit a variety of applications and duct dimensions. They can be made in different widths and heights, and each model number denotes a different percentage of open area and length combination. They provide superior insertion loss and pressure drop performance over standard rectangular attenuators.

The N2T series with 200mm tapered splitters are ideal for general HVAC purposes and suitable for industrial applications.

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
N2T05A	250	20%	600
N2T05B	250	20%	900
N2T05C	250	20%	1200
N2T05C2	250	20%	1400
N2T05E	250	20%	1800
N2T05F	250	20%	2100
N2T05G	250	20%	2400
N2T05H	250	20%	2700
N2T05I	250	20%	3000
N2T05J	250	20%	3300
N2T05K	250	20%	3600
N2T05L	250	20%	3900
N2T05M	250	20%	4200
N2T05N	250	20%	4500
N2T05O	250	20%	4800
N2T05P	250	20%	5100
N2T05Q	250	20%	5400
N2T05R	250	20%	5700
N2T05S	250	20%	6000
N2T07A	275	27%	600	15
N2T07B	275	27%	900	20
N2T07C	275	27%	1200	23
N2T07C2	275	27%	1400	25
N2T07E	275	27%	1800	28
N2T07F	275	27%	2100	32
N2T07G	275	27%	2400	33
N2T07H	275	27%	2700
N2T07I	275	27%	3000
N2T07J	275	27%	3300
N2T07K	275	27%	3600
N2T07L	275	27%	3900
N2T07M	275	27%	4200
N2T07N	275	27%	4500
N2T07O	275	27%	4800
N2T07P	275	27%	5100
N2T07Q	275	27%	5400
N2T07R	275	27%	5700
N2T07S	275	27%	6000
N2T10A	300	33%	600	13
N2T10B	300	33%	900	17
N2T10C	300	33%	1200	21
N2T10C2	300	33%	1400	22
N2T10E	300	33%	1800	26
N2T10F	300	33%	2100	27
N2T10G	300	33%	2400	29
N2T10H	300	33%	2700
N2T10I	300	33%	3000
N2T10J	300	33%	3300
N2T10K	300	33%	3600
N2T10L	300	33%	3900
N2T10M	300	33%	4200
N2T10N	300	33%	4500
N2T10O	300	33%	4800
N2T10P	300	33%	5100
N2T10Q	300	33%	5400
N2T10R	300	33%	5700
N2T10S	300	33%	6000
N2T12A	325	38%	600	11
N2T12B	325	38%	900	16
N2T12C	325	38%	1200	19
N2T12C2	325	38%	1400	21
N2T12E	325	38%	1800	24
N2T12F	325	38%	2100	26
N2T12G	325	38%	2400	28
N2T12H	325	38%	2700
N2T12I	325	38%	3000
N2T12J	325	38%	3300
N2T12K	325	38%	3600
N2T12L	325	38%	3900
N2T12M	325	38%	4200
N2T12N	325	38%	4500
N2T12O	325	38%	4800
N2T12P	325	38%	5100
N2T12Q	325	38%	5400
N2T12R	325	38%	5700
N2T12S	325	38%	6000
N2T15A	350	43%	600	9
N2T15B	350	43%	900	14
N2T15C	350	43%	1200	17
N2T15C2	350	43%	1400	18
N2T15E	350	43%	1800	23
N2T15F	350	43%	2100	25
N2T15G	350	43%	2400	26
N2T15H	350	43%	2700
N2T15I	350	43%	3000
N2T15J	350	43%	3300
N2T15K	350	43%	3600
N2T15L	350	43%	3900
N2T15M	350	43%	4200
N2T15N	350	43%	4500
N2T15O	350	43%	4800
N2T15P	350	43%	5100
N2T15Q	350	43%	5400
N2T15R	350	43%	5700
N2T15S	350	43%	6000
N2T17A	375	47%	600	8
N2T17B	375	47%	900	13
N2T17C	375	47%	1200	16
N2T17C2	375	47%	1400	17
N2T17E	375	47%	1800	21
N2T17F	375	47%	2100	23
N2T17G	375	47%	2400	25
N2T17H	375	47%	2700
N2T17I	375	47%	3000
N2T17J	375	47%	3300
N2T17K	375	47%	3600
N2T17L	375	47%	3900
N2T17M	375	47%	4200
N2T17N	375	47%	4500
N2T17O	375	47%	4800
N2T17P	375	47%	5100
N2T17Q	375	47%	5400
N2T17R	375	47%	5700
N2T17S	375	47%	6000
N2T20A	400	50%	600	7
N2T20B	400	50%	900	10
N2T20C	400	50%	1200	14
N2T20C2	400	50%	1400	15
N2T20E	400	50%	1800	19
N2T20F	400	50%	2100	20
N2T20G	400	50%	2400	22
N2T20H	400	50%	2700
N2T20I	400	50%	3000
N2T20J	400	50%	3300
N2T20K	400	50%	3600
N2T20L	400	50%	3900
N2T20M	400	50%	4200
N2T20N	400	50%	4500
N2T20O	400	50%	4800
N2T20P	400	50%	5100
N2T20Q	400	50%	5400
N2T20R	400	50%	5700
N2T20S	400	50%	6000
N2T22A	425	53%	600	6
N2T22B	425	53%	900	9
N2T22C	425	53%	1200	12
N2T22C2	425	53%	1400	13
N2T22E	425	53%	1800	16
N2T22F	425	53%	2100	18
N2T22G	425	53%	2400	20
N2T22H	425	53%	2700
N2T22I	425	53%	3000
N2T22J	425	53%	3300
N2T22K	425	53%	3600
N2T22L	425	53%	3900
N2T22M	425	53%	4200
N2T22N	425	53%	4500
N2T22O	425	53%	4800
N2T22P	425	53%	5100
N2T22Q	425	53%	5400
N2T22R	425	53%	5700
N2T22S	425	53%	6000
N2T25A	450	56%	600	5
N2T25B	450	56%	900	8
N2T25C	450	56%	1200	11
N2T25C2	450	56%	1400	12
N2T25E	450	56%	1800	14
N2T25F	450	56%	2100	16
N2T25G	450	56%	2400	18
N2T25H	450	56%	2700
N2T25I	450	56%	3000
N2T25J	450	56%	3300
N2T25K	450	56%	3600
N2T25L	450	56%	3900
N2T25M	450	56%	4200
N2T25N	450	56%	4500
N2T25O	450	56%	4800
N2T25P	450	56%	5100
N2T25Q	450	56%	5400
N2T25R	450	56%	5700
N2T25S	450	56%	6000

N3T - Rectangular Attenuators with Tapered Splitters

Features

Fantech's N3T series rectangular attenuators with 300mm thick tapered splitters are available to suit a variety of applications and duct dimensions. They can be made in different widths and heights, and each model number denotes a different percentage of open area and length combination. They provide superior insertion loss and pressure drop performance over standard rectangular attenuators.

The N3T series with 300mm tapered splitters are ideal for general HVAC purposes and suitable for industrial applications.

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
N3T10A	400	25%	600
N3T10B	400	25%	900
N3T10C	400	25%	1200
N3T10C2	400	25%	1400
N3T10E	400	25%	1800
N3T10F	400	25%	2100
N3T10G	400	25%	2400
N3T10H	400	25%	2700
N3T10I	400	25%	3000
N3T10J	400	25%	3300
N3T10K	400	25%	3600
N3T10L	400	25%	3900
N3T10M	400	25%	4200
N3T10N	400	25%	4500
N3T10O	400	25%	4800
N3T10P	400	25%	5100
N3T10Q	400	25%	5400
N3T10R	400	25%	5700
N3T10S	400	25%	6000
N3T12A	425	29%	600
N3T12B	425	29%	900
N3T12C	425	29%	1200
N3T12C2	425	29%	1400
N3T12E	425	29%	1800
N3T12F	425	29%	2100
N3T12G	425	29%	2400
N3T12H	425	29%	2700
N3T12I	425	29%	3000
N3T12J	425	29%	3300
N3T12K	425	29%	3600
N3T12L	425	29%	3900
N3T12M	425	29%	4200
N3T12N	425	29%	4500
N3T12O	425	29%	4800
N3T12P	425	29%	5100
N3T12Q	425	29%	5400
N3T12R	425	29%	5700
N3T12S	425	29%	6000
N3T15A	450	33%	600	9
N3T15B	450	33%	900	14
N3T15C	450	33%	1200	17
N3T15C2	450	33%	1400	18
N3T15E	450	33%	1800	23
N3T15F	450	33%	2100	25
N3T15G	450	33%	2400	26
N3T15H	450	33%	2700
N3T15I	450	33%	3000
N3T15J	450	33%	3300
N3T15K	450	33%	3600
N3T15L	450	33%	3900
N3T15M	450	33%	4200
N3T15N	450	33%	4500
N3T15O	450	33%	4800
N3T15P	450	33%	5100
N3T15Q	450	33%	5400
N3T15R	450	33%	5700
N3T15S	450	33%	6000
N3T17A	475	37%	600	9
N3T17B	475	37%	900	14
N3T17C	475	37%	1200	17
N3T17C2	475	37%	1400	18
N3T17E	475	37%	1800	23
N3T17F	475	37%	2100	25
N3T17G	475	37%	2400	26
N3T17H	475	37%	2700
N3T17I	475	37%	3000
N3T17J	475	37%	3300
N3T17K	475	37%	3600
N3T17L	475	37%	3900
N3T17M	475	37%	4200
N3T17N	475	37%	4500
N3T17O	475	37%	4800
N3T17P	475	37%	5100
N3T17Q	475	37%	5400
N3T17R	475	37%	5700
N3T17S	475	37%	6000
N3T20A	500	40%	600	9
N3T20B	500	40%	900	14
N3T20C	500	40%	1200	17
N3T20C2	500	40%	1400	18
N3T20E	500	40%	1800	23
N3T20F	500	40%	2100	25
N3T20G	500	40%	2400	26
N3T20H	500	40%	2700
N3T20I	500	40%	3000
N3T20J	500	40%	3300
N3T20K	500	40%	3600
N3T20L	500	40%	3900
N3T20M	500	40%	4200
N3T20N	500	40%	4500
N3T20O	500	40%	4800
N3T20P	500	40%	5100
N3T20Q	500	40%	5400
N3T20R	500	40%	5700
N3T20S	500	40%	6000
N3T22A	525	43%	600	9
N3T22B	525	43%	900	14
N3T22C	525	43%	1200	17
N3T22C2	525	43%	1400	18
N3T22E	525	43%	1800	23
N3T22F	525	43%	2100	25
N3T22G	525	43%	2400	26
N3T22H	525	43%	2700
N3T22I	525	43%	3000
N3T22J	525	43%	3300
N3T22K	525	43%	3600
N3T22L	525	43%	3900
N3T22M	525	43%	4200
N3T22N	525	43%	4500
N3T22O	525	43%	4800
N3T22P	525	43%	5100
N3T22Q	525	43%	5400
N3T22R	525	43%	5700
N3T22S	525	43%	6000
N3T25A	550	45%	600	9
N3T25B	550	45%	900	14
N3T25C	550	45%	1200	17
N3T25C2	550	45%	1400	18
N3T25E	550	45%	1800	23
N3T25F	550	45%	2100	25
N3T25G	550	45%	2400	26
N3T25H	550	45%	2700
N3T25I	550	45%	3000
N3T25J	550	45%	3300
N3T25K	550	45%	3600
N3T25L	550	45%	3900
N3T25M	550	45%	4200
N3T25N	550	45%	4500
N3T25O	550	45%	4800
N3T25P	550	45%	5100
N3T25Q	550	45%	5400
N3T25R	550	45%	5700
N3T25S	550	45%	6000
N3T30A	600	50%	600	9
N3T30B	600	50%	900	14
N3T30C	600	50%	1200	17
N3T30C2	600	50%	1400	18

RT - Rectangular Attenuators with Tapered Splitters

Features

The RT rectangular attenuators are available in a wide range of dimensions. They have tapered splitters which provide a lower noise reduction in comparison to straight splitter variants, but have a lower static pressure loss across the attenuator.

RT models use a bio-soluble acoustic grade glass wool or mineral wool infill, faced with fiberglass membrane, encased in finely perforated galvanised steel. Infill is hygroscopic and incombustible. It is suitable for dry general HVAC and industrial applications.

The splitter frames made from durable galvanized sheet steel as standard.

Refer to the Q-Seal series for applications where moisture may be present in the air stream.

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
RT07A	275	27%	600	15
RT07B	275	27%	900	18
RT07C	275	27%	1200	21
RT07D	275	27%	1500	22
RT07E	275	27%	1800	24
RT07F	275	27%	2100	26
RT07G	275	27%	2400	27
RT10A	300	33%	600	13
RT10B	300	33%	900	16
RT10C	300	33%	1200	19
RT10D	300	33%	1500	21
RT10E	300	33%	1800	22
RT10F	300	33%	2100	23
RT10G	300	33%	2400	24
RT12A	325	38%	600	12
RT12B	325	38%	900	16
RT12C	325	38%	1200	18
RT12D	325	38%	1500	19
RT12E	325	38%	1800	21
RT12F	325	38%	2100	22
RT12G	325	38%	2400	24
RT15A	350	43%	600	11
RT15B	350	43%	900	14
RT15C	350	43%	1200	16
RT15D	350	43%	1500	18
RT15E	350	43%	1800	20
RT15F	350	43%	2100	21
RT15G	350	43%	2400	22
RT17A	375	47%	600	10
RT17B	375	47%	900	13
RT17C	375	47%	1200	16
RT17D	375	47%	1500	17
RT17E	375	47%	1800	19
RT17F	375	47%	2100	20
RT17G	375	47%	2400	21
RT20A	400	50%	600	9
RT20B	400	50%	900	11
RT20C	400	50%	1200	14
RT20D	400	50%	1500	16
RT20E	400	50%	1800	17
RT20F	400	50%	2100	18
RT20G	400	50%	2400	19
RT22A	425	53%	600	8
RT22B	425	53%	900	10
RT22C	425	53%	1200	13
RT22D	425	53%	1500	14
RT22E	425	53%	1800	15
RT22F	425	53%	2100	17
RT22G	425	53%	2400	18
RT25A	450	56%	600	7
RT25B	450	56%	900	9
RT25C	450	56%	1200	12
RT25D	450	56%	1500	13
RT25E	450	56%	1800	14
RT25F	450	56%	2100	15
RT25G	450	56%	2400	17

NTA - Rectangular Attenuators with Tapered Splitters

Features

The NTA rectangular attenuators are available in a wide range of dimensions. They have tapered splitters which provide a lower noise reduction in comparison to straight splitter variants, but have a lower static pressure loss across the attenuator.

NTA AirLay models use a revolutionary polyester acoustic infill which is made from 70% recycled plastics. It provides greater insertions losses across the most critical frequencies when compared to conventional infill materials. Airlay is suitable for dry general HVAC applications with temperatures up to 80°C.

The NTA rectangular attenuators use cases and splitter frames made from durable galvanized sheet steel as standard.

Refer to the Q-Seal series for applications where moisture may be present in the air stream.

The RT (standard model) rectangular attenuators are also available in a wide range of dimensions (see below)

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
NTA05C	250	20%	1200	22
NTA05C2	250	20%	1400	24
NTA05D	250	20%	1500	25
NTA05E	250	20%	1800	27
NTA05F	250	20%	2100	29
NTA05G	250	20%	2400	32
NTA05H	250	20%	2700	33
NTA05I	250	20%	3000	34
NTA05J	250	20%	3300	37
NTA05K	250	20%	3600	39
NTA07C	275	27%	1200	21
NTA07C2	275	27%	1400	23
NTA07D	275	27%	1500	23
NTA07E	275	27%	1800	25
NTA07F	275	27%	2100	27
NTA07G	275	27%	2400	29
NTA07H	275	27%	2700	30
NTA07I	275	27%	3000	30
NTA07J	275	27%	3300	33
NTA07K	275	27%	3600	35
NTA10C	300	33%	1200	20
NTA10C2	300	33%	1400	22
NTA10D	300	33%	1500	22
NTA10E	300	33%	1800	23
NTA10F	300	33%	2100	25
NTA10G	300	33%	2400	26
NTA10H	300	33%	2700	28
NTA10I	300	33%	3000	29
NTA10J	300	33%	3300	30
NTA10K	300	33%	3600	31
NTA12C	325	38%	1200	19
NTA12C2	325	38%	1400	20
NTA12D	325	38%	1500	21
NTA12E	325	38%	1800	23
NTA12F	325	38%	2100	24
NTA12G	325	38%	2400	26
NTA12H	325	38%	2700	26
NTA12I	325	38%	3000	28
NTA12J	325	38%	3300	29
NTA12K	325	38%	3600	30
NTA15C	350	43%	1200	17
NTA15C2	350	43%	1400	19
NTA15D	350	43%	1500	20
NTA15E	350	43%	1800	21
NTA15F	350	43%	2100	23
NTA15G	350	43%	2400	24
NTA15H	350	43%	2700	25
NTA15I	350	43%	3000	25
NTA15J	350	43%	3300	27
NTA15K	350	43%	3600	28
NTA17C	375	47%	1200	17
NTA17C2	375	47%	1400	19
NTA17D	375	47%	1500	19
NTA17E	375	47%	1800	21
NTA17F	375	47%	2100	22
NTA17G	375	47%	2400	23
NTA17H	375	47%	2700	24
NTA17I	375	47%	3000	24
NTA17J	375	47%	3300	26
NTA17K	375	47%	3600	27
NTA20C	400	50%	1200	16
NTA20C2	400	50%	1400	17
NTA20D	400	50%	1500	18
NTA20E	400	50%	1800	20
NTA20F	400	50%	2100	21
NTA20G	400	50%	2400	22
NTA20H	400	50%	2700	23
NTA20I	400	50%	3000	23
NTA20J	400	50%	3300	26
NTA20K	400	50%	3600	27
NTA22C	425	53%	1200	15
NTA22C2	425	53%	1400	16
NTA22D	425	53%	1500	17
NTA22E	425	53%	1800	18
NTA22F	425	53%	2100	20
NTA22G	425	53%	2400	21
NTA22H	425	53%	2700	21
NTA22I	425	53%	3000	22
NTA22J	425	53%	3300	24
NTA22K	425	53%	3600	25
NTA25C	450	56%	1200	13
NTA25C2	450	56%	1400	15
NTA25D	450	56%	1500	15
NTA25E	450	56%	1800	17
NTA25F	450	56%	2100	18
NTA25G	450	56%	2400	19
NTA25H	450	56%	2700	21
NTA25I	450	56%	3000	21
NTA25J	450	56%	3300	22
NTA25K	450	56%	3600	24