Bin/basket can be used as a single unit or linked with a second bin/basket for double capacity. You can have two linked recycle bins for 30 liter recycling capacity or one recycle bin linked with waste basket that accepts 15 liters of recycling and 15 liters of waste. You can also create your own personal recycling system to separate paper from cans and plastic bottles right at your desk. This 15-liter bin is designed with one flat side to reduce surface area under desks when used as a single item. Bin is made from recyclable, mar-resistant and scratch-resistant polypropylene.