This NSI/Leviton Lens Kit D (5.2" Diameter) for LEO Spotlight is one of 4 lens kits for the Enhanced Performance Ellipsoidal Reflector Spotlight, LEO. The lenses can be moved and used together to achieve field angles of 15°, 19°, 26°, 36°, and 50°. This lens kit D, for instance, will produce a field angle of 15°.
For LEO Ellipsoidal Reflector Spotlight