Speciality Sound Absorbent Muffler
This speciality sound absorbent muffler insert will decrease the audible sound at the radon mitigation exhaust vent pipe location. Just roll the insert and slide into the pipe before installing your varmint screen. It is laser cut to perfectly fit 4 inch schedule 40 pipe. Mufflers are included in all our mitigation systems except those that vent through a roof and recommended but optional for your DIY project.