A semi-cutoff fixture is a type of lighting fixture commonly used in outdoor applications, particularly as wall packs mounted on walls or poles.

A refractor is a type of fixture that utilizes a prismatic refractor lens to evenly distribute light. This lens is designed to manipulate the path of light, ensuring that it is spread out uniformly across a given area.

A T8 fluorescent bulb is a type of tubular lighting fixture commonly used in various industries and buildings. The “T” in T8 stands for “tubular,” indicating its shape, while the number “8” represents its diameter, which is 8/8 inch or 1 inch.

Tungsten halogen refers to a type of lamp or light source which are characterized by their utilization of a tungsten filament and a halogen gas to produce light.

A post light is an outdoor lighting fixture designed to be mounted on a post or pole. These fixtures are commonly used to provide illumination in outdoor spaces such as driveways, pathways, gardens, and yards.

Radiation is the transmission of energy through space in the form of electromagnetic waves. It encompasses various types of electromagnetic radiation, including radio waves, microwaves, X-rays, gamma rays, and visible light.

A U-bend lamp is a type of fluorescent lamp that has been shaped into a U configuration. This design allows the lamp to fit into fixtures with limited space, such as troffer lights.

Artificial light is the visible light that is generated by manmade sources rather than occurring naturally. It is produced through various technological means, such as light-emitting diodes (LEDs) or other artificial light sources.

A self-ballasted lamp, also known as an SB lamp, is designed with a built-in ballast, which eliminates the need for an external ballast.

Fixture Lumens refers to the total visible light output produced by a lighting fixture. It is a measurement that quantifies the brightness or intensity of light emitted by the fixture.