The silencers are used for perfect sounding of the fan and smooth running of the air-conditioning system. For complete sound insulation, use 2 dampers located on each side...
When it comes to silence, the industry-standard always looks toward CAN Silencers. Developed to fit any flange size, CAN Silencers are connected to inline fans to promote profound sound reduction.
A single CAN Silencer will significantly reduce the sound of your ventilation system, and two will make it entirely inaudible. When you need to ensure total silence - look no further than CAN Silencers.