# How to Add a High Wall Return Vent
Things You'll Need
- Flexible air duct
- Saw
- Metal vent box
- 2 by 4 wooden boards
- Duct tape
- Nails
- Plastic ties
- Hammer
- Scissors
- Cordless drill
- Aluminum tape
- Screws
- Plastic rib
- Insulated duct board
- Measuring tape
- Mastic adhesive cement
- Paintbrush
Instructions
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1
Pick only the areas of ductwork that are damaged to be removed. Once you have removed the ductwork, you can begin to attach the metal vent box.
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2
Pull the duct with string up to the vent hole and with plastic ties attach to a stud every few feet so that it hangs tight.
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3
Seal the new duct to the vent in place with plastic ties. Fasten securely since gravity will pull the flex pipe downward.
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4
Clip the plastic ties at the end and use aluminum tape to seal everything tight. You will need to burnish with a plastic rib.
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5
Hold the new vent in place with a wooden frame. Measure the hole accurately-cut the 2 by 4s, nail the frame together and then nail the frame into the vent hole.
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6
Fill in gaps in the wall with insulated duct board. You will need to cut the board to size.
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7
Prepare to seal the vent with mastic adhesive cement in order to prevent any air leaks. Once the cement has dried, replace the grate.
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1
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