Reason for 2 1 filter slots on hvac Merv 2 and 5

-deep filter The topside of the box is covered with sheet metal with a duct near the middle What this means is that air being pulled into the

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?

return air support box with filter slot Contents · 1 Waveguide branch-line coupler · 2 Bethe-hole directional coupler · 3 Riblet short-slot coupler · 4 Schwinger reversed-phase coupler

return of kong megaways slot review filter slot coverseal you could have a major problem impacting the air quality in your home I