Elica ETR634SS Trento 34" Ss rangeto30 Turn On The Heat Without Turn On The Heat Without The Click Click Clamor Slave Dampers Can Be "Ganged" Together To Provide A Cost Effective Means To Provide For Higher Volumes Of Make Up Air( Li)(Li)Interlocked Make Up Air Damper Systems Meet Irc Code Requirements For Make Up Air With Range Hoods Over 400 Cfm( Li)(Li)Interlocked Make Up Air Systems Avoid Wasted Energy Associated With Barometric Solutions And Do Not Let Unwanted Air Into The Home During Heating Or Cooling Activities So Air Pressure Is Equalized For A Well Balanced Environment( Li)(Li)Fresh Air Wall Caps Are Required For Use With Make Up Air Dampers( Li)( Ul) Professional Grade Performance Technical FeaturesTrento Provides Professional Grade Performance Plus The All In One Design Avoids The Need To Purchase A Stainless Liner