You could go with something like this, but that seems a bit too overpriced.
For the installs I do, I typically don’t install any equipment requiring power inside these structured media panels. In my opinion, they should only be used to patch the cables to the structured cabling.
But… if you’d prefer to mount it inside, then using a zip tie to wrap around those metal holes to hold the equipment will work just fine.
As far as cooling goes, it really depends on the panel size, how much equipment is in there, and how much heat they generate. It’s usually not an issue though, again, these panels are typically only used to create a “patch point”.
Mounting tape might cause heat buildup since it appears that your modem has ventilation holes on both sides. Would something like this shelf work better?
I have the same AX55 router. It runs hot so I used a raised mounting plate with keystone posts to ensure effective heat dissipation.
I just put it all in a Legrand Wi-Fi-friendly (I.e. plastic) enclosure. If your cabinet is metal, I wouldn’t mount it inside the enclosure. Here’s my setup:
https://i.imgur.com/TKIGhDf.jpg
I wouldn’t buy an AP unless your testing suggests that the enclosure’s location is so poor that you need to augment your coverage to compensate.
In my Leviton media panel I used a stand off and attached the switch with double sided velcro. I attached the cable/coax hub directly with double sided vecro. To attach the stand off where I wanted, I drilled additional holes.
I then used the existing tie down spots to secure things vecro and thing ties for the holes in the back.
Eg
https://www.amazon.com/Leviton-49605-AUB-Plastic-Universal-Structured/dp/B07V5WXFNK
https://www.amazon.com/Legrand-AC1050-Mounting-Plate-White/dp/B095SYPWD5
Leviton 49605-AUB Plastic... https://www.amazon.com/dp/B07V5WXFNK?ref=ppx_pop_mob_ap_share
Leviton 49605-AUB Plastic... https://www.amazon.com/dp/B07V5WXFNK?ref=ppx_pop_mob_ap_share
Mine are these incredibly overpriced Leviton ones
Oh, you won't like this. I went with the Leviton shelves. I hear you - they are more expensive than they should be. https://www.amazon.com/gp/product/B07V5WXFNK/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
OP posted in same thread the Amazon link:
https://smile.amazon.com/gp/product/B07V5WXFNK/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
I ordered them off of Amazon. https://smile.amazon.com/gp/product/B07V5WXFNK/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1
Sure it's from Amazon... Leviton brand (fits fine!).
https://www.amazon.com/dp/B07V5WXFNK/ref=cm_sw_r_cp_apap_VvpgSqHbZy7DQ
Without having a model number, my best guess is Leviton.
Something like this:
https://www.amazon.com/Leviton-49605-AUB-Plastic-Universal-Structured/dp/B07V5WXFNK
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https://www.leviton.com/en/products/residential/networking/structured-media-centers/advantages