I realize this would depend on cabinet construction type such as frameless, etc. but what would be the deepest I could get a two drawer stack? What I need to know is what is the tallest item I could store in a deep drawer and still have enough clearance to open and shut the drawer. Although drawers are more convenient, I'm wondering if I might not be able to store even taller items in rollouts or in pull out shelves attached to the door.