Unless there is an actual Air Return Duct on the stair return are you really gaining anything with all the other openings to the basement, underbelly, and anywhere else. Now on a former TT we had, the return grate was attached to the furnace directly below the fridge, so something there would have worked, but seems most 5ers the furnace is mounted behind the basement wall with the return just being open to that entire area.
Now this all could vary, depending on Floor Plan and exact location of the furnace.
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Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
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