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2

I have installed a vent screen that looks almost exactly like the one you linked to. Mine had a plastic frame piece that screwed to the wall around the vent assembly. Then the screen part just snaps onto the sides of the frame with a snap. It can be easily removed for cleaning out accumulated lint by inserting a flat blade screw driver into a notch on ...


5

It is possible there is an "inline duct fan" half way along the duct. These are "designed to produce higher working pressures for applications that require high air flows, with low relative noise." compared to cheaper surface-mounted fans. Your duct presumably runs through your attic/loft and is accessible from there. There will probably be an ...


2

It may be a passive ventilation system (which are more commonly found in apartments). You should follow the duct and see where it goes. I only say that because, well, it may just be a shoddy job, or it may be going to an HVAC sytem or something crazy. This is an unusual thing. You should have a vent and the vent should go outside. For best results the vent ...


1

You have an interesting problem, with a lot of compounding issues. If you only have 4 courses of brick on top of dirt, that's not much of a foundation either way. I personally would be greatly concerned about movement, but the fact that its been that way for a couple of hundred years is kind rendering it null and void. I wonder too what you mean by "poly ...


0

I know it's a funny answer but I have used a brick with holes in it and a rope tied to it to get the clog out a then used the brushes that was recommended. Only of course if it is a straight vent from attic.



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