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Old 06-21-2015, 09:39 PM   #1
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Join Date: Nov 2014
Posts: 140
Fresh air vents filter modify for pets

I,have modified our fresh air
intake vents to make it easier to service and use a 1212 filter which you can buy at any hardware store. You have to purchase the vent cover from a heating and cooling company. You can't get them at a big box store . Remove the old filter cover and measure and mark the area, use a dry wall saw and a drywall knife to cut the opening. Allow 1/4 more area for the frame to fit. Use 1/2 1 wood for frame and to attach it on 1 side. Make it longer than the intended opening. Use the old screws and attach the frame to ceiling. Use smaller / shorter pieces to make the duct and inside frame to increase air flow. Install filter and cover. Use care when cutting ceiling. You don't want to make a mistake. You will have larger intake area and filter area. Easy access and clean /replace the filters. I replaced all 4. I have 3 cats. Which generates a lot of fur. Hope this helps someone. 😊
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Old 06-22-2015, 07:55 PM   #2
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Join Date: Jul 2014
Location: South Carolina
Posts: 20
I have been wondering how to fix the dust issue in our RV. Nice photos. Thanks!

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Old 06-22-2015, 09:41 PM   #3
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Join Date: Nov 2014
Posts: 140
Make sure that your vent opening of the cover is in a direction if the cover drops it will be pushed back up,when the slides open. Or you can secure the cover with a sheet metal screw. If the clasps become loose. Glad you like this. I hope that this helps anyone interested.
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Old 08-08-2015, 11:16 AM   #4
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Join Date: Jun 2014
Posts: 4
Great mod and great instructions! Now I just have get the guts to cut into the ceiling.
Full-timing in a 38' Prime Time Sanibel Fifth Wheel pulled with a 2015 RAM 3500 Dually Diesel
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vent, modifications

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