High bays lighting is an industry standard term for a more heavy duty types of light fitting.
High bay lighting solutions are designed to be used in spaces that need well distributed and uniform light for open areas. They are typically used when ceiling heights are 20-45’ high. The proper reflectors and optics used by the fitting helps guarantee the correct light output. A particular consideration for use with a high bay is if it can light vertical surfaces as well as it can illuminate the floor, or working plane. Lighting of verticals is particularly important when dealing with warehouses where items are required to be picked from a shelf.