Should you put filters in air return vents?

case at all Is my plan for moving return duct a few inches ok? 2 · How can I fix this furnace filter slot to prevent filters bending?

The focal point of todays video is to highlight how easy it is to make a filter slot in the return air

return of kong megaways slot I'm in the process of getting a new furnace and one contractor suggested moving the filter media slot higher up in the 10x24 return air

return of kong megaways slot review 731-20X24 - 24X10 CAD KIT 26GA SIDE LOAD 32 IN DUCT WPASS THROUGH FILTER SLOT WITH CANVAS CONNECTOR 731-20X24