Multifaceted Reflectors (often called MR) are light bulbs that can be fluorescent or LED based. They are highly suited for directional lighting requirements found in retail, landscaping or residential applications. The reflector controls the direction and spread of light cast from the lamp. MR lamps are available with different beam angles from narrow spot lights to wide flood lamps. MR lamps are designated by symbols where the diameter is represented by numerals indicating units of eighths of an inch (example MR11 which means 11/8 inches).