The Sonic 2-stage filter silencer is usable in any blower with a 4-in. inlet and airflows up to 1,100 cfm. The first-stage filtration uses twin panel filters. The second-stage cartridge filter protects the blower directly. A dual-function gauge allows for monitoring to determine when filters need replacement.
Sonic Air Systems; 714-255-0124; www.sonicairsystems.com