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Vents are best as big as possible. It is easy to reduce the flow of a vent, but difficult to increase it. An 8" round = 4x4x3=36 square inches for air to flow through. A 4x12 square = 4x12=48 square inches for air to flow through. A 6x10 square = 6x10=60 square inches for air to flow through. A square duct does not pass quite as much air as a round duct....


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Here's a different apprach, but may be more work. Cut a rectangle of your hardware screen approximately 1/2" longer and wider (1/4" on each side) than your opening. Slit the 4 corners on a diagonal 1/4"-1/2". This allows you to fold the edges without buckling the screen. Then, force the piece of screen into each opening. The edges ...


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As small a hole as you're going to need, there's no need for even a hammer drill. A masonry bit in a regular drill and some patience should work just fine. No doubt a hammer drill or a rotary hammer (yes, they're different) will make it easier, but if you don't have one, all is not lost. Also, If you're driving the Tapcon and it stops short of full insertion,...


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Leave an escape route. Trapping animals in a space is no good. They try hard to get out and chew everything. Then they die and stink. Ask how I know! Leave one of the holes open so the animals that live under there can leave. Put a Havahart trap in front of their route out and you can catch and either kill or relocate them as they leave. Then when no ...


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That's a solid plan. The only thing slightly easier than manhandling hardware mesh would be to purchase pre-framed ones. Obviously, that's way more expensive. Tapcon-wise, a small hammer drill will work hard with the 3/16 drill bit, but just take your time. (Pull the bit out regularly as you drill.) A rotary hammer is nice for bigger holes, but not necessary ...


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It's never a good idea to close vents. You need the air circulating so keep them open. Get an inexpensive filter from your home store and cut a piece from it the size of your vent. Install it inside the vent register or tape it over the register and see if it cuts down on the dust.


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There is no reason if you get on your hands and knees that you cannot feel the grates or empty space. I would check all walls from 8-16" and press down with my hand. But even if you find them, what will you do? Also an easier way is to have Lowe's get their stupid installer out and lift up the carpet on all walls to make sure there are no vents ...


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