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Greenwood Acoustic MA3051 wall ventilator in white providing acoustic attenuation to Dn
'X' suffix models also have powered electric anti-backdraught shutters 258512
mould & plant spores
used to catch small and often invisible particles such as pollen spore bacterium and dust are also available - see model reference 90000323
41mm channel clips 1 1/4" (32mm) B6850
Greenwood Acoustic MA3051 airflow-filters-cat-10 Greenwood Acoustic MA3051 wall ventilatorGreenwood Acoustic MA3051 wall ventilator in white providing acoustic attenuation to Dn,e,w 55dB(A), suitable for external wall thicknesses of 140mm and above and can be installed in internal wall constructions of between 100 150mm. Equivalent performance 2500mm2. Supplied with internal controllable vent and white sand external grilles. Conforms to acoustic requirements of Noise Insulation Regulations (NIR) 1975, one of only a small number of products
US$ 2159.00
US$ 2255.00
US$ 1293.25
US$ 1580.25
