Abstract: A high bay light fixture with a monolithic die cast housing. An LED driver and a sensor socket can be installed in a component tray in the center section. The left section and the right section of the housing have LED channels in which LED assemblies are mounted. Lenses can be slid into the LED channels via the open ends of the LED channels. Channel caps are attached to the open ends. Closed ends can also be formed into the housing. The channel caps and the closed ends prevent the lenses from sliding out of the LED channel. Lens tabs prevent the lens from falling out of the LED channels. The housings have bonding bracket mount points and can be attached end to end by bonding brackets attached to the bonding bracket mount points, thereby forming dual and triple fixtures.