The FLX-SQOL silencer was designed as an attenuating element that is mounted
before the FLX-PLO / FLX-PRO plenum box. It has either 1 or 2 spigots
(just like the number of FLX-PLO / FLX-PRO plenum boxes spigots),
the silencer is connected using FLX-HDPE ducting.
In the case of 3-spigot FLX-PLO plenum boxes, it's recommended to use a combination
of two silencers - 2n + 1n. The FLX-SQOL silencer are insulated with an attenuating material
- non-combustible stone wool.