Sealed
beam lamps offer you a wide variety of beam spread
patterns and light intensities based on your specification
of individual lamp and lens configuration. Each lamp is
fully waterproof and weather resistant. The life expectancy
of sealed beam lamps is measured in hours of life as determined
by closely controlled laboratory tests at intended voltage
ratings. Actual hours of operation will vary in the field
based on the particular lamp, installation practices and
environmental conditions present.