Carton Packing and Container Loading in Detail: 500 Sheets per Ream, 5 Reams per Carton. 1560 Cartons per 20 ft full container loading ( packed and loaded with pallets ). 1600 Cartons per 20 ft full container loading ( packed and loaded without pallets ). 7800 Reams per 20 ft full container loading ( packed and loaded with pallets ). 8000 Reams per 20 ft full container loading ( packed and loaded without pallets ). Custom packing and container loading could be offered given requirements of clients.