Furnace Return Air Box with Filter Rack - 21.5" x 28.5"


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Southwark return air box features a 20" x 25" x 1" filter rack and measures 21" wide, 28" deep, and 18" tall.

Product Specifications

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Furnace Return Air Box with Filter Rack - 21.5" x 28.5"
ManufacturerOnline Supply
Height18 inches
Width21 inches
Depth28 inches
Safety InformationPROPOSITION 65 WARNING


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Questions and Answers

Customer Questions
How much weight can this hold? I have a Carrier 17.5” x 28.5”, 75,000 btu.
There is no official weight capacity, but this will easily support any standard 21" wide furnace. The only exception would be a giant, heavy oil burner.   If you have any further questions please feel free to give us a call! Thanks
Is the opening for the return air on the bottom? Can I open the side for a side return air application?
This return air box has an outlet hole in place at the top of the box, this is due to it being used for the up-flow applications. This hole measures 25" long and 21 1/2" wide. The box will also have the filter rack drawer that will pull out from the side of the box. We recommend that you give us a call if you have any further questions. Thanks!
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