"Large stack" typically refers to a significant amount or quantity of something, such as a pile or collection of items. It suggests that there is a considerable number or volume of the mentioned object or substance. Full definition
The two sizes are perfect for large stacks of paper or for hanging your latest art print in your gallery wall. (bando.com)
The dining and lounge area is open - plan, and has neat and comfortable leather sofas, with large stack doors that opens onto the deck area, which includes patio furniture. (travelground.com)
Because we have become spoiled by e-mail, traditional resumes now sit in large stacks waiting for someone to take the time to scan and / or file them away. (sciencemag.org)