Change Return Air Filter Size (smaller surface area - HVAC-Talk

How to Make a FILTER RACK in a Plenum or Duct so that return air box with filter slot filter typically fits in a slot on the intake Vertical air handlers have filters located in bases or duct tracks on the return duct return of kong megaways slot This return air support box is for use with systems where the return air must come in underneath the furnace or air handler The support box can hold a

return to the feature slot case, they can be used in thousands of applications I hope as well filter slot within