Rectangular Attenuators

Products

C1 - Circular 1D Open Type Attenuators

Features

The 'C1' circular attenuators units are one diameter long. They are generally mounted directly to or close to an axial flow fan.

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
C1-031	315	%	300	8
C1-035	350	%	300	8
C1-040	400	%	600	8
C1-045	450	%	600	8
C1-050	500	%	600	8
C1-056	560	%	600	9
C1-063	630	%	600	9
C1-071	710	%	900	9
C1-080	800	%	900	9
C1-090	900	%	1150	9
C1-100	1000	%	1150	8
C1-125	1250	%	1150	8
C1-140	1400	%	1150	8
C1-160	1600	%	1800	8
C1-180	1800	%	1800	7
C1-200	2000	%	1800	7

C2 - Circular 2D Open Type Attenuators

Features

The 'C2' circular attenuators units are nominally two diameters long. They are generally mounted directly to or close to an axial flow fan.

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
C2-031	315	%	600	13
C2-035	350	%	600	13
C2-040	400	%	900	13
C2-045	450	%	900	14
C2-050	500	%	1150	13
C2-056	560	%	1150	14
C2-063	630	%	1150	14
C2-071	710	%	1500	14
C2-080	800	%	1500	14
C2-090	900	%	1800	13
C2-100	1000	%	1800	13
C2-125	1250	%	2400	13
C2-140	1400	%	2400	13
C2-160	1600	%	3600	12
C2-180	1800	%	3600	12
C2-200	2000	%	3600	12

C1P - Circular 1D Pod Type Attenuators

Features

The 'C1P' circular attenuators are one diameter long with a central pod. They are generally mounted directly on or close to an axial flow fan.

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
C1P-031	315	%	300	12
C1P-035	350	%	300	13
C1P-040	400	%	600	13
C1P-045	450	%	600	13
C1P-050	500	%	600	13
C1P-056	560	%	600	13
C1P-063	630	%	600	13
C1P-071	710	%	900	14
C1P-080	800	%	900	13
C1P-090	900	%	1150	13
C1P-100	1000	%	1150	13
C1P-125	1250	%	1150	13
C1P-140	1400	%	1150	13
C1P-160	1600	%	1800	12
C1P-180	1800	%	1800	12
C1P-200	2000	%	1800	12

C2P - Circular 2D Pod Type Attenuators

Features

The 'C2P' circular attenuators units are nominally two diameters long. They are generally mounted directly to or close to an axial flow fan.

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
C2P-031	315	%	600	17
C2P-035	350	%	600	17
C2P-040	400	%	900	17
C2P-045	450	%	900	17
C2P-050	500	%	1150	18
C2P-056	560	%	1150	18
C2P-063	630	%	1150	19
C2P-071	710	%	1500	19
C2P-080	800	%	1500	19
C2P-090	900	%	1800	19
C2P-100	1000	%	1800	19
C2P-125	1250	%	2400	19
C2P-140	1400	%	2400	20
C2P-160	1600	%	3600	20
C2P-180	1800	%	3600	20
C2P-200	2000	%	3600	20

C1..QS - Q-Seal Circular 1D Open Type

Features

The 'C1..QS' (Q-seal) circular attenuators are one diameter long. They have an impervious seal between the acoustic fill and ambient air. They are used in critical applications where the possibility of fibre contamination of the acoustic fill is not allowed. There is a penalty on the acoustic performance in exchange for the certainty that fibre fly is eliminated. Typical applications are as follows: -

clean rooms
operating theatres
wet environments where attenuators are exposed to the elements
kitchen exhaust systems
applications where workers are sensitive to fibre exposure

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
C1-031QS	315	%	300	6
C1-035QS	350	%	300	6
C1-040QS	400	%	600	6
C1-045QS	450	%	600	6
C1-050QS	500	%	600	6
C1-056QS	560	%	600	6
C1-063QS	630	%	600	6
C1-071QS	710	%	900	6
C1-080QS	800	%	900	6
C1-090QS	900	%	1150	6
C1-100QS	1000	%	1150	6
C1-125QS	1250	%	1150	6
C1-140QS	1400	%	1150	6
C1-160QS	1600	%	1800	6
C1-180QS	1800	%	1800	5
C1-200QS	2000	%	1800	5

C2..QS - Q-Seal Circular 2D Open Type

Features

The 'C2..QS' (Q-Seal) circular attenuators are nominally two diameters long. They have an impervious seal between the acoustic fill and ambient air. They are used in critical applications where the possibility of fibre contamination of the acoustic fill is not allowed. There is a penalty on the acoustic performance in exchange for the certainty that fibre fly is eliminated. Typical applications are as follows: -

clean rooms
operating theatres
wet environments where attenuators are exposed to the elements
kitchen exhaust systems
applications where workers are sensitive to fibre exposure

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
C2-031QS	315	%	600	11
C2-035QS	350	%	600	11
C2-040QS	400	%	900	11
C2-045QS	450	%	900	11
C2-050QS	500	%	1150	11
C2-056QS	560	%	1150	11
C2-063QS	630	%	1150	12
C2-071QS	710	%	1500	12
C2-080QS	800	%	1500	12
C2-090QS	900	%	1800	11
C2-100QS	1000	%	1800	11
C2-125QS	1250	%	2400	11
C2-140QS	1400	%	2400	10
C2-160QS	1600	%	3600	10
C2-180QS	1800	%	3600	9
C2-200QS	2000	%	3600	9

C1P..QS - Q-Seal Circular 1D Pod Type Attenuators

Features

The 'C1P..QS' (Q-Seal) circular attenuators are one diameter long with a central pod. They have an impervious seal between the acoustic fill and ambient air. They are used in critical applications where the possibility of fibre contamination of the acoustic fill is not allowed. There is a penalty on the acoustic performance in exchange for the certainty that fibre fly is eliminated. Typical applications are as follows: -

clean rooms
operating theatres
wet environments where attenuators are exposed to the elements
kitchen exhaust systems
applications where workers are sensitive to fibre exposure

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
C1P-031QS	315	%	300	11
C1P-035QS	350	%	300	11
C1P-040QS	400	%	600	11
C1P-045QS	450	%	600	11
C1P-050QS	500	%	600	11
C1P-056QS	560	%	600	11
C1P-063QS	630	%	600	11
C1P-071QS	710	%	900	11
C1P-080QS	800	%	900	11
C1P-090QS	900	%	1150	11
C1P-100QS	1000	%	1150	11
C1P-125QS	1250	%	1150	11
C1P-140QS	1400	%	1150	10
C1P-160QS	1600	%	1800	10
C1P-180QS	1800	%	1800	10
C1P-200QS	2000	%	1800	10

C2P..QS - Q-Seal Circular 2D Pod Type Attenuators

Features

The 'C2P..QS' (Q-Seal) circular attenuators are nominally two diameters long with a central pod. They have an impervious seal between the acoustic fill and ambient air. They are used in critical applications where the possibility of fibre contamination of the acoustic fill is not allowed. There is a penalty on the acoustic performance in exchange for the certainty that fibre fly is eliminated. Typical applications are as follows: -

clean rooms
operating theatres
wet environments where attenuators are exposed to the elements
kitchen exhaust systems
applications where workers are sensitive to fibre exposure

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
C2P-031QS	315	%	600	15
C2P-035QS	350	%	600	15
C2P-040QS	400	%	900	15
C2P-045QS	450	%	900	15
C2P-050QS	500	%	1150	16
C2P-056QS	560	%	1150	16
C2P-063QS	630	%	1150	17
C2P-071QS	710	%	1500	17
C2P-080QS	800	%	1500	17
C2P-090QS	900	%	1800	16
C2P-100QS	1000	%	1800	17
C2P-125QS	1250	%	2400	16
C2P-140QS	1400	%	2400	16
C2P-160QS	1600	%	3600	17
C2P-180QS	1800	%	3600	17
C2P-200QS	2000	%	3600	17

CC - CC Series Circular Attenuators

Features

The 'CC' circular attenuators have a high performance and are of an ultra-light construction. They may be mounted directly to the fan, before the outlet grille or anywhere in the system where their application will reduce the ambient noise level.

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
CC015M	150	%	500	16
CC020H	200	%	1000	15
CC020M	200	%	500	13
CC025H	250	%	1000	13
CC025M	250	%	500	10
CC030H	300	%	1500	14
CC030M	300	%	1000	11
CC031H	315	%	1500	14
CC031M	315	%	1000	11

CTL - Cross Talk with wall penetration above ceiling

Features

The Q-Tech range of Cross-Talk attenuators has been designed to provide low air flow resistance whilst maintaining a high degree of acoustic attenuation.

The CT series should be considered wherever a relief air passage is required to penetrate a room’s acoustic barrier.

The CTL (wall to ceiling penetration) style is available in both standard and high performance configurations

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
CTL1-200	300	100%	900	20
CTL1-300	300	100%	900	20
CTL1-400	300	100%	900	20
CTL2-200	300	100%	1800	26
CTL2-300	300	100%	1800	26
CTL2-400	300	100%	1800	26

CTS - Cross Talk with wall to ceiling penetration

Features

The Q-Tech range of Cross-Talk attenuators has been designed to provide low air flow resistance whilst maintaining a high degree of acoustic attenuation.

The CT series should be considered wherever a relief air passage is required to penetrate a room’s acoustic barrier.

The CTS (for simple wall penetration above ceiling) style is available in both standard and high performance configurations

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
CTS1-200	300	100%	900	18
CTS1-300	300	100%	900	18
CTS1-400	300	100%	900	18
CTS2-200	300	100%	1800	25
CTS2-300	300	100%	1800	25
CTS2-400	300	100%	1800	25

CTU - Cross Talk with ceiling to ceiling penetration

Features

The Q-Tech range of Cross-Talk attenuators has been designed to provide low air flow resistance whilst maintaining a high degree of acoustic attenuation.

The CT series should be considered wherever a relief air passage is required to penetrate a room’s acoustic barrier.

The CTU (ceiling to ceiling penetration) style is available in both standard and high performance configurations

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
CTU1-200	300	100%	900	20
CTU1-300	300	100%	900	20
CTU1-400	300	100%	900	20
CTU2-200	300	100%	1800	26
CTU2-300	300	100%	1800	26
CTU2-400	300	100%	1800	26

CTZ - Cross Talk with installation within the wall

Features

The Q-Tech range of Cross-Talk attenuators has been designed to provide low air flow resistance whilst maintaining a high degree of acoustic attenuation.

The CT series should be considered wherever a relief air passage is required to penetrate a room’s acoustic barrier.

The CTZ (installation within the wall) style is available in both standard and high performance configurations

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
CTZ1-200	300	100%	900	20
CTZ1-300	300	100%	900	20
CTZ1-400	300	100%	900	20
CTZ2-200	300	100%	1800	26
CTZ2-300	300	100%	1800	26
CTZ2-400	300	100%	1800	26

ASB - ASB Aerosound Acoustic Louvres

Features

The advanced design of the new Aerosound Acoustic Louvre achieves optimal acoustic performance while providing very low resistance to the air flow passing through it.

The Aerosound’s innovative design provides better acoustic performance & up to 40% less pressure loss than 300 & 400mm conventional acoustic louvres.

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
ASB-1000	200	20%	200	9
ASB-1275	200	23%	200	9
ASB-1525	200	23%	200	9
ASB-1800	200	24%	200	9
ASB-2050	200	24%	200	9
ASB-2300	200	24%	200	9
ASB-490	200	14%	200	9
ASB-750	200	19%	200	9

SBL1 - Sound Bar Louvres

Features

The Q-Tech range of acoustic louvres acts as both an efficient acoustic barrier but also permits the accurate prediction of the resistance to air flow.

Large openings are catered for by the use of a number of individual modules for site assembly.

The standard units are of galvanised steel but units of special materials such as stainless steel and aluminium can be supplied on request. In addition, the acoustic in-fill can be supplied in an impervious membrane at the cost of some acoustic performance.

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
SBL1-1000	500	30%	300	11
SBL1-1250	500	32%	300	11
SBL1-1500	500	33%	300	11
SBL1-1750	500	34%	300	11
SBL1-2000	500	35%	300	11
SBL1-2250	500	36%	300	11
SBL1-500	500	20%	300	11
SBL1-750	500	27%	300	11

SBL2 - Sound Bar Louvres

Features

The Q-Tech range of acoustic louvres acts as both an efficient acoustic barrier but also permits the accurate prediction of the resistance to air flow.

Large openings are catered for by the use of a number of individual modules for site assembly.

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
SBL2-1000	500	30%	600	17
SBL2-1250	500	32%	600	17
SBL2-1500	500	33%	600	17
SBL2-1750	500	34%	600	17
SBL2-2000	500	35%	600	17
SBL2-2250	500	36%	600	17
SBL2-500	500	20%	600	17
SBL2-750	500	27%	600	17

POW - PowerLine Square Attenuators

Features

Matching attenuators designed to attach directly to the inlet and outlet of all PowerLine PCD/PCE series fans and selected Multiflow MMD/MME series fans.

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
POW31SIL	315	50%	600	9
POW35SIL	350	56%	900	9
POW40SIL	400	40%	900	14
POW45SIL	450	45%	900	13
POW50SIL	500	54%	1200	13
POW56SIL	560	45%	1200	16
POW63SIL	630	50%	1500	16
POW71SIL	710	51%	1500	14
POW80SIL	800	60%	1800	14

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

N2T..QS - Q-Seal Rectangular Attenuators with Tapered Splitters

Features

The N2T..QS rectangular Q-Seal tapered attenuator includes the qualities of the N2T series attenuator and incorporates an infill system protected by an impermeable plastic membrane/film.

The N2T..QS series is suitable in medical and clean room applications and any sensitive ventilation systems requiring an infill material that prevents the possibility of insulation fibre ingress into the airstream.

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
N2T05AQS	250	20%	600
N2T05BQS	250	20%	900
N2T05C2QS	250	20%	1400
N2T05CQS	250	20%	1200
N2T05EQS	250	20%	1800
N2T05FQS	250	20%	2100
N2T05GQS	250	20%	2400
N2T05HQS	250	20%	2700
N2T05IQS	250	20%	3000
N2T05JQS	250	20%	3300
N2T05KQS	250	20%	3600
N2T05LQS	250	20%	3900
N2T05MQS	250	20%	4200
N2T05NQS	250	20%	4500
N2T05OQS	250	20%	4800
N2T05PQS	250	20%	5100
N2T05QQS	250	20%	5400
N2T05RQS	250	20%	5700
N2T05SQS	250	20%	6000
N2T07AQS	275	27%	600	15
N2T07BQS	275	27%	900	20
N2T07C2QS	275	27%	1400	25
N2T07CQS	275	27%	1200	23
N2T07EQS	275	27%	1800	28
N2T07FQS	275	27%	2100	32
N2T07GQS	275	27%	2400	33
N2T07HQS	275	27%	2700
N2T07IQS	275	27%	3000
N2T07JQS	275	27%	3300
N2T07KQS	275	27%	3600
N2T07LQS	275	27%	3900
N2T07MQS	275	27%	4200
N2T07NQS	275	27%	4500
N2T07OQS	275	27%	4800
N2T07PQS	275	27%	5100
N2T07QQS	275	27%	5400
N2T07RQS	275	27%	5700
N2T07SQS	275	27%	6000
N2T10AQS	300	33%	600	13
N2T10BQS	300	33%	900	17
N2T10C2QS	300	33%	1400	22
N2T10CQS	300	33%	1200	21
N2T10EQS	300	33%	1800	26
N2T10FQS	300	33%	2100	27
N2T10GQS	300	33%	2400	29
N2T10HQS	300	33%	2700
N2T10IQS	300	33%	3000
N2T10JQS	300	33%	3300
N2T10KQS	300	33%	3600
N2T10LQS	300	33%	3900
N2T12AQS	325	38%	600	11
N2T12BQS	325	38%	900	16
N2T12C2QS	325	38%	1400	21
N2T12CQS	325	38%	1200	19
N2T12EQS	325	38%	1800	24
N2T12FQS	325	38%	2100	26
N2T12GQS	325	38%	2400	28
N2T12HQS	325	38%	2700

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

N3T..QS - Q-Seal Rectangular Attenuators with Tapered Splitters

Features

The N3T..QS rectangular Q-Seal tapered attenuator includes the qualities of the N3T series attenuator and incorporates an infill system protected by an impermeable plastic membrane/film.

The N3T..QS series is suitable in medical and clean room applications and any sensitive ventilation systems requiring an infill material that prevents the possibility of insulation fibre ingress into the airstream.

Model	Width Increment	Free Area Ratio	Length	dB(A) Reduction
N3T10AQS	400	25%	600
N3T10BQS	400	25%	900
N3T10C2QS	400	25%	1400
N3T10CQS	400	25%	1200
N3T10EQS	400	25%	1800
N3T10FQS	400	25%	2100
N3T10GQS	400	25%	2400
N3T10HQS	400	25%	2700
N3T10IQS	400	25%	3000
N3T10JQS	400	25%	3300
N3T10KQS	400	25%	3600
N3T10LQS	400	25%	3900
N3T10MQS	400	25%	4200
N3T10NQS	400	25%	4500
N3T10OQS	400	25%	4800
N3T10PQS	400	25%	5100
N3T10QQS	400	25%	5400
N3T10RQS	400	25%	5700
N3T10SQS	400	25%	6000
N3T12AQS	425	29%	600
N3T12BQS	425	29%	900
N3T12C2QS	425	29%	1400
N3T12CQS	425	29%	1200
N3T12EQS	425	29%	1800
N3T12FQS	425	29%	2100
N3T12GQS	425	29%	2400
N3T12HQS	425	29%	2700
N3T12IQS	425	29%	3000
N3T12JQS	425	29%	3300
N3T12KQS	425	29%	3600
N3T12LQS	425	29%	3900
N3T12MQS	425	29%	4200
N3T12NQS	425	29%	4500
N3T12OQS	425	29%	4800
N3T12PQS	425	29%	5100
N3T12QQS	425	29%	5400
N3T12RQS	425	29%	5700
N3T12SQS	425	29%	6000
N3T15AQS	450	33%	600	9
N3T15BQS	450	33%	900	14
N3T15C2QS	450	33%	1400	18
N3T15CQS	450	33%	1200	17
N3T15EQS	450	33%	1800	23
N3T15FQS	450	33%	2100	25
N3T15GQS	450	33%	2400	26
N3T15HQS	450	33%	2700
N3T15IQS	450	33%	3000
N3T15JQS	450	33%	3300
N3T15KQS	450	33%	3600
N3T15LQS	450	33%	3900
N3T15MQS	450	33%	4200
N3T15NQS	450	33%	4500
N3T15OQS	450	33%	4800
N3T15PQS	450	33%	5100
N3T15QQS	450	33%	5400
N3T15RQS	450	33%	5700
N3T15SQS	450	33%	6000
N3T17AQS	475	37%	600	9
N3T17BQS	475	37%	900	14
N3T17C2QS	475	37%	1400	18
N3T17CQS	475	37%	1200	17
N3T17EQS	475	37%	1800	23
N3T17FQS	475	37%	2100	25
N3T17GQS	475	37%	2400	26
N3T17HQS	475	37%	2700
N3T17IQS	475	37%	3000
N3T17JQS	475	37%	3300
N3T17KQS	475	37%	3600
N3T17LQS	475	37%	3900
N3T17MQS	475	37%	4200
N3T17NQS	475	37%	4500
N3T17OQS	475	37%	4800
N3T17PQS	475	37%	5100
N3T17QQS	475	37%	5400
N3T17RQS	475	37%	5700
N3T17SQS	475	37%	6000
N3T20AQS	500	40%	600	9
N3T20BQS	500	40%	900	14
N3T20C2QS	500	40%	1400	18
N3T20CQS	500	40%	1200	17
N3T20EQS	500	40%	1800	23
N3T20FQS	500	40%	2100	25
N3T20GQS	500	40%	2400	26
N3T20HQS	500	40%	2700
N3T20IQS	500	40%	3000
N3T20JQS	500	40%	3300
N3T20KQS	500	40%	3600
N3T20LQS	500	40%	3900
N3T20MQS	500	40%	4200
N3T20NQS	500	40%	4500
N3T20OQS	500	40%	4800
N3T20PQS	500	40%	5100
N3T20QQS	500	40%	5400
N3T20RQS	500	40%	5700
N3T20SQS	500	40%	6000
N3T22AQS	525	43%	600	9
N3T22BQS	525	43%	900	14
N3T22C2QS	525	43%	1400	18
N3T22CQS	525	43%	1200	17
N3T22EQS	525	43%	1800	23
N3T22FQS	525	43%	2100	25
N3T22GQS	525	43%	2400	26
N3T22HQS	525	43%	2700
N3T22IQS	525	43%	3000
N3T22JQS	525	43%	3300
N3T22KQS	525	43%	3600
N3T22LQS	525	43%	3900
N3T22MQS	525	43%	4200
N3T22NQS	525	43%	4500
N3T22OQS	525	43%	4800
N3T22PQS	525	43%	5100
N3T22QQS	525	43%	5400
N3T22RQS	525	43%	5700
N3T22SQS	525	43%	6000
N3T25AQS	550	45%	600	9
N3T25BQS	550	45%	900	14
N3T25C2QS	550	45%	1400	18
N3T25CQS	550	45%	1200	17
N3T25EQS	550	45%	1800	23
N3T25FQS	550	45%	2100	25
N3T25GQS	550	45%	2400	26
N3T25HQS	550	45%	2700
N3T25IQS	550	45%	3000
N3T25JQS	550	45%	3300
N3T25KQS	550	45%	3600
N3T25LQS	550	45%	3900
N3T25MQS	550	45%	4200
N3T25NQS	550	45%	4500
N3T25OQS	550	45%	4800
N3T25PQS	550	45%	5100
N3T25QQS	550	45%	5400
N3T25RQS	550	45%	5700
N3T25SQS	550	45%	6000
N3T30AQS	600	50%	600	9
N3T30BQS	600	50%	900	14
N3T30C2QS	600	50%	1400	18
N3T30CQS	600	50%	1200	17
N3T30EQS	600	50%	1800	23
N3T30FQS	600	50%	2100	25
N3T30GQS	600	50%	2400	26
N3T30HQS	600	50%	2700
N3T30IQS	600	50%	3000
N3T30JQS	600	50%	3300
N3T30KQS	600	50%	3600
N3T30LQS	600	50%	3900
N3T30MQS	600	50%	4200
N3T30NQS	600	50%	4500
N3T30OQS	600	50%	4800
N3T30PQS	600	50%	5100
N3T30QQS	600	50%	5400
N3T30RQS	600	50%	5700
N3T30SQS	600	50%	6000