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Reflector (R) bulbs put approximately double the amount of light (footcandles) on the subject as General Service (A) of same wattage.
Parabolic Reflector (PAR) bulbs control light more precisely. They produce about four times the light of General Service (A) and are used in recessed and track lighting. Weatherproof casing makes them suitable for outdoor spot and flood fixtures.
Tungsten-Halogen.
Produces a bright, white light. Has longer life and provides more light (lumens) per watt than regular incandescent bulbs. Maintains maximum efficiency throughout life of bulb. Available in both line- (120 volts) and low-voltage (12 volts). Low-voltage types require a transformer to step down the voltage. Among the most popular tungsten-halogen bulbs are:
LINE VOLTAGE
PAR 16, 20, 30 and 38 reflectorized bulbs provide better beam control than regular incandescent PAR bulbs. Available in numerous spot and flood beam spreads. Used in track, recessed, and outdoor spot, and floodlights.
T-3 Double-Ended bulbs are available in a variety of base types and are used in wall sconces, torchiers, and outdoor flood lights. The direction of the light is controlled by the fixture.
T-4 Single-Ended bulbs come in both "mini-can" and "bayonet" base types and are used in wall sconces, bath brackets, torchiers, and pendants. The direction of the light is controlled by the fixture.
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