Acoustic wall ventilator
Our MA3051 is the highest performing acoustic background ventilator, providing acoustic attenuation to Dn,e,w 55dB.
2500mm² equivalent area performance
Suitable for external wall thicknesses of 140mm and above
Internal controllable trickle ventilator
Internal wall constructions of between 100mm and 150mm
Supplied with internal controllable vent and white external grilles
Conforms to acoustic requirements of Noise Insulation Regulations 1975; one of only a small number of products available in the UK