Garvin 52181-Svt 4" Sq Chicago Plenum Air Tight Junction Box 3" Deep (8) 1/2" & (4) 3/4" Side Ko's

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Garvin 52151-Svt 4" Sq Chicago Plenum Junction Box 1-1/2" Deep 1/2" And 3/4" Ko's

Garvin 52171-1-Vt 4" Sq Chicago Plenum Air Tight Junction Box Drawn 2-1/8" Deep (8) 1" Side Ko's

BUILDMART - 36" Plenum Box For [36" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box For Heating And Cooling - Texas Buildmart

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Enervex Stainless Steel Plenum Box For RS And RSHT 14 To 16 Chimney...

BUILDMART - 72" Plenum Box For [72" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box For Heating And Cooling - Texas Buildmart

BUILDMART - 60" Plenum Box For [60" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box For Heating And Cooling - Texas Buildmart

BUILDMART - 60" Plenum Box For [60" Linear Slot Diffuser - 2 Slot - Double Slot] Premium Insulated Plenum Box For Heating And Cooling - Texas Buildmart

Pursuit Boat A/C Plenum Box 5555370 | Dometic 8 1/4 Inch 229501631 in Black/Silver | Great Lakes Skipper | Aluminum

BUILDMART - 72" Plenum Box For [72" Linear Slot Diffuser - 1 Slot - Single Slot] Premium Insulated Plenum Box For Heating And Cooling - Texas Buildmart

Dometic Boat A/C Plenum Box 229501929 | BX V16HV55/A4.B3.C4.D3-Z In Black/Silver | Great Lakes Skipper | Aluminum

Dometic Boat Air Conditioning Plenum Box | Aluminum Duct In Silver/Black | Great Lakes Skipper

Dometic Boat AC Plenum Box 229801708 | Air Supply 4 3/4 X 2 Inch In Silver/Black | Great Lakes Skipper | Aluminum

Dometic Boat AC Plenum Box 229800468 | 9 1/4 X 7 1/4 Inch Aluminum In Silver/Black | Great Lakes Skipper

Dometic Boat AC Plenum Box 229801132 | Carver Aluminum 9061370 in Silver/Black | Great Lakes Skipper

Dometic Boat Air Conditioning Plenum Box 229801669 | 11 5/8 X 8 1/4 Inch In Silver/Black | Great Lakes Skipper | Aluminum

Dometic Boat A/C Plenum Box 229500932 | Pursuit 7 1/4 X 7 1/8 Inch In Black/Silver | Great Lakes Skipper | 7 1/4" W X 7 1/8" H X 7 1/2" D | Aluminum

M&M MANUFACTURING MP-DFP2025R6 Combination Return Air Filter Box & Plenum, 20in X 25in X 25In, Optimizes Airflow, R6 Insulation

Dometic Boat A/C Plenum Box 229502008 | Tiara 7 1/4 X 8 1/4 Inch In Black/Silver | Great Lakes Skipper | Aluminum

Oxbox Insulated Furnace Return Plenum

Dometic Boat A/C Plenum Box 229801372 | Tapered 8 3/4 X 10 1/2 Inch In Silver/Black | Great Lakes Skipper | 8 3/4" W X 4 1/8" H X 10 1/2" D | Aluminum