High bay LED light fixtures to have many shapes and sizes to suit your needs. Round high bay lights are also called UFO high bay lights. They have one contact point with the ceiling which makes them the easiest high bays to install. Modular high bay lights are commonly seen in wholesale retailers, warehouses, and other wide-open spaces with a lot of aisles or shelving. They can be mounted directly to the ceiling or hung with chains or cables. The type of high bay lights you choose will depend on your specific space and purpose.