phresh duct silencer 12in x 36in 701220

Phresh Duct Silencer 8 in x 24 inSound reducing acoustic foam decreases fan noise by up to 50%. Use with fans in conjunction with carbon filters, light systems and more. Durable and light weight 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.