What is Capacity in liters?

Capacity in liters is the usable space inside the product, in liters, as the brand's own site states it. In an air fryer it decides how much food fits before you need to cook in batches. Beko lists 8.5 liters, Bosch lists 7.2 liters, and Bosch Hausgeräte lists 12 liters. More capacity suits a household that cooks for several people at once.