PhreshPhresh Duct Silencer 8 in x 24 in

Sound reducing acoustic foam decreases fan noise by up to 50%.
Use with fans in conjunction with carbon filters, light systems, and more.
Durable and lightweight aluminum body. Compact size is easy to install.
Attach a Phresh Silencer to the intake or exhaust side of an inline fan.
Use on both sides for maximum sound reduction.