Incandescent lamp with a dense, milky-white silica coating on the inside of the bulb; diffuses the light and completely conceals the lamp filament.

Fixture or parts made entirely of brass; in other words, not plated or simulated. Solid brass parts are “solid brass”, not “solid parts”; often, they are hollow castings and tubing.

Fixture or parts made entirely of brass; in other words, not plated or simulated. Solid brass parts are “solid brass”, not “solid parts”; often, they are hollow castings and tubing.

Electronics that use semiconductor chips and circuitry, rather than vacuum tubes. See Electronic Ballast, Electronic Dimmer, Electronic Transformer.

Electronics that use semiconductor chips and circuitry, rather than vacuum tubes. See Electronic Ballast, Electronic Dimmer, Electronic Transformer.

For an even lighting pattern, the maximum distance between fixtures, as a function of their Mounting Height. Important for spacing downlights. Also called Spacing-to-Mounting Height Ratio and abbreviated S/MH. A S/MH of 0.7 indicates fixtures should be spaced no more than 5.6′ apart for even lighting on the floor from an 8′ ceiling.

For an even lighting pattern, the maximum distance between fixtures, as a function of their Mounting Height. Important for spacing downlights. Also called Spacing-to-Mounting Height Ratio and abbreviated S/MH. A S/MH of 0.7 indicates fixtures should be spaced no more than 5.6′ apart for even lighting on the floor from an 8′ ceiling.

Fixtures with construction and lighting performance suitable for institutional, better commercial, and premium residential applications. Generally larger, with higher wattage lamps, and costlier.

Fixtures with construction and lighting performance suitable for institutional, better commercial, and premium residential applications. Generally larger, with higher wattage lamps, and costlier.

Highly polished and mirror-like. Semi-Specular Finish is generally bright but without a well-defined mirror image.