Summit shallow depth. Comes around 18 depth. Home Depot sells it online https://www.homedepot.com/p/Summit-Appliance-Shallow-Depth-24-in-33-Bottle-Wine-and-80-Can-Beverage-Cooler-in-Stainless-Steel-ASDG2411/323875144

We had a 15" ULine beverage fridge installed in our previous house and it worked well for 10 years, when we sold the house. The only reason we went with 15" was because the previous owners had an ice maker in that spot that we weren't interested in keeping. We are building and this time around we went with a 24", but chose SZ since I wanted it paneled. I would recommend you go to a 24" if you have the space.

Take a look at XO. I have two homes with all Sub Zero, Miele, Blue Star, so my appliance budgets have been generous. But I never thought that paying SZ price for a wine fridge made any sense. I have a U-Line in my NYC apartment I have had it since 2012. It is not noisy at all. In my country house, I have two wine fridges—another U-Line which I put on my laundry room and the XO wine/beverage fridge which is great-looking and very quiet.

Yes. You should run HVAC to the new finished pantry space. You will also need an HVAC return in the pantry. These will keep down the growth of mold and mildew. You will want this even if you weren't adding any appliance to this new space. Your appliance will produce heat and the pantry will be very warm if you don't put in HVAC. I did this myself by enclosing some area of the porch. The appliance I put in the area really produced a lot of heat. I assume that your unit is freestanding or will be enclosed in cabinetry. You will need nothing else. However, make sure the finished space is insulated as if it were part of the conditioned space of the home. If you are carving this space out of a garage, you will need to be certain that it is built with firewall from the garage and that it does not share ventilation from the garage. This project will need a building permit in most parts of the country, there are always exceptions.