In order to ensure the normative noise level in the system and in the premises, it is proposed to additionally install silencers next to the ventilation equipment;
Material: perforated aliuminium foil with steel spiral and sound;
Insulation covered wit polyethylene;
Diameter, mm: 100-315;
Length, m: 1,2;
Operating temperature: -10/+80  °C; 
Insulation thickness, mm: 25/50.