Stackable Flash Card Holder

This stackable flash card holder is designed to keep flash cards organized and easily accessible. It is suitable for study, classroom, and office use. The stackable design allows multiple holders to be securely placed on top of one another, helping save desk space while keeping cards neatly stored. It works well for flash cards, index cards, and other note cards with a maximum size of 153 × 107 mm. The model is optimized for simple and reliable 3D printing, with a clean design focused