T-Bar Return Air Filter Grilles

I was changing my HVAC filters yesterday and I noticed in the air return box slot inside the 20x20 intake box I slid the filter out

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 I was changing my HVAC filters yesterday and I noticed in the air return box slot inside the 20x20 intake box I slid the filter out

return of the green knight slot Install the filter media box between the return air plenum and the air handler box 2 Slide the filter into the slot and place the filter