Trickle vent types and performance

Name	Manufacturer	Type	Dne	Dnew+Ctr
125mm Acoustic High Rise Aircore AAH5HM	Rytons	Wall vent	39
AAC125HP	Rytons	Wall vent	43
Passivent Fresh 90dB	Passivent	Wall vent	45
Airvac AAB	Greenwood	Wall vent	46
Fresh 80 dB	Passivent	Wall vent	50
Airvac MA3051	Greenwood	Wall vent	55
5000EA.AC1	Greenwood	Trickle	39	37
5000EA.AC2	Greenwood	Trickle	42	38
2500EA.AC1	Greenwood	Trickle	42	40
EAR24	Greenwood	Trickle	42	42
2500EA.AC2	Greenwood	Trickle	45	42
D Vent	Greenwood	Trickle	34
L Vent	Greenwood	Trickle	37
TVALdB 450	Passivent	Trickle	40
TVALdB 800	Passivent	Trickle	42
Sonovent (Small) Airslot 25 mm	Renson	Bulkhead	37	34
Sonovent (Medium) Airslot 25 mm	Renson	Bulkhead	39	35
Sonovent (Large) Airslot 25 mm	Renson	Bulkhead	41	35
Sonovent (Small) Airslot 20 mm	Renson	Bulkhead	40	37
Sonovent (Large) Airslot 20 mm	Renson	Bulkhead	44	38
Sonovent (Medium) Airslot 15 mm	Renson	Bulkhead	45	39
Sonovent (Small) Airslot 15 mm	Renson	Bulkhead	41	39
Sonovent (X-large) Airslot 25 mm	Renson	Bulkhead	45	39
Sonovent (Medium) Airslot 20 mm	Renson	Bulkhead	43	40
Sonovent (X-large) Airslot 20 mm	Renson	Bulkhead	46	40
Sonovent (Small) Airslot 10 mm	Renson	Bulkhead	46	41
Sonovent (Medium) Airslot 10 mm	Renson	Bulkhead	48	42
Sonovent (Large) Airslot 15 mm	Renson	Bulkhead	49	42
Sonovent (Large) Airslot 10 mm	Renson	Bulkhead	50	44
Sonovent (X-large) Airslot 15 mm	Renson	Bulkhead	53	47
Sonovent (X-large) Airslot 10 mm	Renson	Bulkhead	56	50
CAICE Acoustic Ventilator (2000 mm width x 400 mm depth)	CAICE	Bulkhead	41
Sonovent (X-large) Airslot 10 mm	Renson	Bulk head	56