- Self-contained icemakers incorporate an ice-production system and ice storage bin into one machine. The smallest machine of the range produces 20kg/24hrs and stores up to 4kg, while the largest produces up to 155kg/24hrs and stores up to 65kg. Hollow Ice - Hollow cubes of crystalline ice that cool quickly and melt slowly - particularly suited to hard water areas due to ice manufacturing processes. Suitable for: nightclubs, pubs, restaurants, healthcare industries, educational facilities, hotels and supermarkets.