Rectangular duct silencers SKS are designed for rectangular
duct fans VKS/VKSA and can be mounted into a system
of rectangular air ducts. SKS silencers have good sound
attenuation characteristics. Several silencers can be mounted into
a rectangular air duct system if there is requirement for bigger noise
reduction. The casing is made of galvanized steel and inner casing
is made of perforated sheet steel. Mineral wool is used for sound
insulation.