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Attic vent screen insert with replaceable mesh — image 1
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Attic vent screen insert with replaceable mesh

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This part offers protection from unwanted parties entering the attic space, without compromising air-flow.

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I designed this part as the existing system was to put a mesh sheet behind a wood plank with holes cut through it. Unfortunately, some of the screens became damaged. I designed this piece so that it will go into the holes and offer the ability for the mesh screen to be easily replaced. 

I recommend printing with PETG, it should be better suited for outdoor use and it is harder than PLA. Also, as the part has threads a layer height of 0.15 mm is preferable due to the overhangs. 

Current dimensions for the wall insert are diameter 53 mm, depth 20 mm.

I bought some mesh screen sheets and used some snips to cut out a circular mesh screen. approx. 50 mm diameter.

There are two lock washers that allow for the installation of a single mesh screen or you can double it up. 

I bought some mesh screen sheets and used some snips to cut out a circular mesh screen. approx. 50 mm diameter.

If you have a slanted roof might be better to mount it at 45 degrees off axis so you can get the drill in. I also recommend predrilling holes for installing the screws. 

The top cover screws in last to hide the screw holes, giving a better aesthetic. 

I also recommend using some lubricant/grease on the threads for easier installation. 

You will need to buy:

Screws:

https://www.amazon.com/Sheet-Screws-Phillips-Stainless-Tapping/dp/B08MTPGJFB/ref=asc_df_B08MTPGJFB/?tag=hyprod-20&linkCode=df0&hvadid=693340177858&hvpos=&hvnetw=g&hvrand=13212360881199495683&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=9031915&hvtargid=pla-2070006692292&psc=1&mcid=c78663663f8934b79c69d2b126786dbe&gad_source=1

Mesh screen:

Wire Mesh Sheet, 4 Pack 16 Mesh... https://www.amazon.com/dp/B0CH7XHF7J?ref=ppx_pop_mob_ap_share

Tools:

I recommend using some snips. These ones worked well for me:

https://www.amazon.com/MIDWEST-Aviation-Snip-Set-KUSHN-POWER/dp/B00OCGQG3S/ref=asc_df_B00OCGQG3S/?tag=hyprod-20&linkCode=df0&hvadid=693399569031&hvpos=&hvnetw=g&hvrand=8892308075261036749&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9031914&hvtargid=pla-433935499907&mcid=bb384669da1c3cf4bbd21553bda1e924&gad_source=1&th=1

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