Master Flow 20 in x 25 in Return Air Box with Filter Rail RAB20X25

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

Notice that filter slot near the middle of the photo Not only is air duct to the return side downstream of the filter Oops! When

return to paris slot 14 X 14 Steel Return Air Filter Grille for 1 Filter - Removable FaceDoor - HVAC DUCT COVER - Flat Stamped Face -White

return linear slot diffuser slot, these are not provided with this product For an option with removable channels for multiple filter sizes, see our FRB filter rack base; Come in a