Honeywell SPRD12X8 static pressure regulating damper.Unit is 12L x 8H. Free freight on this item in the continental U.S.(UPS Ground) Items are new and unused in original box. Please  call (952) 884-8266 with questions call (612) 518-6683 After 5:00 and on weekends. I ship nationwide.  Minnesota residents will be charged sales tax.