Sound decreasing grills
Sound grills
Registered unique acoustic product. You can achieve noise level restriction up to 20 dB(A) with 400 MM installation depth. Or eventually through chaining of the vents to increase the effect attenuation.
Registered unique acoustic product. You can achieve noise level restriction up to 20 dB(A) with 400 MM installation depth. Or eventually through chaining of the vents to increase the effect attenuation.