BUILDMART - 18" Plenum Box for [18" Linear Slot Diffuser - 3 Slot - Triple Slot] Premium Insulated Plenum Box for Heating and Cooling - Texas Buildmart

• Galvanized sheet metal Plenum Box with foam insulation, ideal for Texas Buildmart 18" lineal slot diffuser. This air-distribution box attaches directly to the supply of the HVAC equipment that heats or cools the air. Connects to: 10" flexible duct in oval shape. Can be used and brazed to a 4" or 6" wood stud. If you do not have this size flex, you can use a reducer to modify the size. Professional HVAC Installer is Recommended.

• Ideal for Texas Buildmart 18" Lineal Slot Diffuser - 3 Slot
• Galvanized sheet metal Plenum Box with foam insulation
• Total Box Dimensions: L: 19 3/16" W: 6 1/8" H: 12"
• Mouth Dimensions: L: 17 7/8" W: 4 3/4"
• Entry size: 10" flex in oval shape
• This air-distribution box attaches directly to the supply of the HVAC equipment that heats or cools the air
• If you do not have this size flex, you can use a reducer to modify the size

Here's a link to the Diffuser that fits this Plenum Box:

18" Linear Slot Diffuser - 3 Slot - Triple Slot Linear Diffuser - Texas Buildmart - Modern AC Vent Covers for Ceilings, Walls & Floors - Commercial Grade HVAC Registers, Grilles & Vents - Home Decor & Wall Decor for Amazon Home

Here's a link to the Diffuser that fits this Plenum Box:

18" Linear Slot Diffuser - 3 Slot - Triple Slot Linear Diffuser - Texas Buildmart - Modern AC Vent Covers for Ceilings, Walls & Floors - Commercial Grade HVAC Registers, Grilles & Vents - Home Decor & Wall Decor for Amazon Home