Standard tambour appliance garages are 18" high, as that's the standard space between upper cabinets and base cabinets. Countertop MWs are pretty deep (around 18" or deeper) unless you're talking a teensy one like you'd find in a dorm room, and those are at least 15" deep. There's only so much that can be done with stock cabinetry, and if the cabinet line doesn't even have slide out shelves, it's unlikely that they carry tambour appliance garages or extra depth cabinets. You can find the hardware for the pocket door cabinet, but you'd need a very good and experienced cabinet installer to be able to create what you want when so little pieces are available from your cabinet line. Really, you seem to want so much more than your cabinet line can offer that you might benefit from just accepting the stock builder's grade cabinetry and laminate counters (get a credit for the granite) and then ordering new cabinets from a line that offers exactly what you want from the beginning. Retrofitting cabinetry to the degree you're talking costs a LOT more than getting it the way you want from the beginning.

Yes you can! I have been researching this as well. Go to the Blum website and you'll see what type you need, as there are 4 different types. They are expensive- so far I've found several suppliers on line, and you can expect to spend about $200. Here is a link that might be useful: Blum Aventos HL

If your cabinet only has depth of 12" then a longer flipper door will not fit in your cabinet I don't believe. In the link I attached there is an 18" slide. I'm just linking to it because o the diagrams in the additional pictures. As you can see by the images, if your cabinet is only 12" deep, then the slide would stick out too far. It's the same logic as if you had a drawer with a 12" depth, you couldn't use a 16" slide. Here is a link that might be useful: Flipper Door Set

So, I'm just back from HD where I was totally shut down. HD: Can't do anything for you. Contact the company. Me: Do you have their number? HD: No. Look it up online. Me: Do you think there is anywhere else in the city that I could buy garage door hardware? HD: No. Me: Don't you think they look like giant ...? HD: No. Okay, I made up that last line of dialogue, but I'm sure that would have been his response if I had asked. I am so personable that I get a bit hurt when someone completely ignores my charms. I might just try back tomorrow and see if someone else is working or go to another HD. Not a total loss though as he taught me a new strategy for dealing with people I want to get rid of - I think I'll call it, "The Deadpan No".