This combination Air Supply Blower 1.5HP 120V Silencer
 eliminates noise so well that virtually no foam is required.

Mfg AIR SUPPLY OF THE FUTURE INC Mfg # :   6316120F Department :   SPA MISC Product Line : Spa Blowers 1.5HP 120V Silencer

The Air Supply, Silencer Blower 1.5HP/120V unique motor mount is the secret to success. A thick rubber cup encases the fan while allowing the motor to vibrate freely on a flexible rubber base. This combination eliminates noise so well that virtually no foam is required. Included with each silencer is a durable spring check valve. This is far more effective than flapper valves at stopping motor damage,