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Louis Poulsen PH 4½-3 Outdoor Wall Lamp - POU-5743909489
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Louis Poulsen
SKU:
POU-5743909489
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Louis Poulsen PH 4½-3 Outdoor Wall Lamp - POU-5743909489
Poul Henningsen designed the three-shade system back in 1925-1926. The first lights using the system were designed by PH in cooperation with Louis Poulsen for an exhibition in Paris. This partnership continued up until his death in 1967. Throughout his life, PH sought to create glare-free light, direct light where it was most needed, and create soft shadows, using incandescent bulbs as a light source. PH Wall is a member of the three-shade family, which numbers 18 lights today, including three for outdoor use. Thus, PH did not just design a light but an entire system – around a thousand different models have been produced over the years. This wide selection consisted of table, floor and wall lamps, as well as a number of different chandeliers, which were very popular in the 30s for lighting private homes from high ceilings. There were countless combination options. The lights were available in different colors as well as a range of sizes. The first shades were made of metal with a painted undersurface, such as white, gold, or silver – depending on whether diffuse, warm, or cold light was desired. Glass was later introduced for the three-shade system. In addition to the downward-directed light, glass lamps illuminated the room. PH was the first person to pursue a scientific approach to light and use the logarithmic spiral as a basis. By using a design based on the logarithmic spiral, he achieved an even distribution of light over the entire curve of the shade. This even light distribution, together with the diffuse reflection through the glass, made it possible to control glare and shadow. Each shade reduces the amount of light equally due to their distance from the light source. The PH light model numbers refer to the shade size. Each top shade had a corresponding set of middle and lower shades. In the ‘pure’ models, such as the 2/2, the top shade has a size of about 20 cm, with corresponding lower shades. PH Wall consists of an approximately 45 cm top shade but uses lower shades from the 3/3 model. These ‘hybrid’ models were introduced due to the desire to hang pendants at lower heights. The system was also used for wall, floor, and table lamps. PH Wall was launched in 1966.
Material
Spun copper
Dimensions
11.4 H x 17.7 W x 19.9 L inches; Weight: 10.9 lbs
Light Source
1x 15W E26
What our Experts Think
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Classic Three-Shade Design: Based on Poul Henningsen’s original glare-free system, this lamp delivers soft, downward-directed light perfect for outdoor pathways, entrances, and terraces.
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Weather-Resistant Craftsmanship: Features spun copper shades and a copper-plated brass wall box. The untreated finish will develop a natural patina over time, adding character while ensuring longevity in outdoor conditions.
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Soft, Even Illumination: The white-painted underside of each shade provides balanced, glare-free lighting ideal for welcoming outdoor environments.
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Easy Installation: Designed to mount over a standard 4-inch junction box. Includes a backplate approximately 6.1 inches in diameter for secure attachment.
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Lighting Specs: Compatible with one 15W E26 medium base bulb (not included). Rated for wet locations and dimmable with standard dimmers for added flexibility.
Q&A
Q: What is the Louis Poulsen PH 4½-3 Outdoor Wall Lamp?
A: A classic outdoor wall light based on Poul Henningsen’s 3-shade system, designed to provide soft, glare-free illumination with timeless elegance.
Q: What materials is it made from?
A: Spun stainless steel shades with a white painted underside, and a glass diffuser for even light distribution.
Q: What type of light source does it use?
A: E27 bulb, max 70W, LED compatible.
Q: Where is it suitable for use?
A: Ideal for entryways, exterior walls, terraces, and architectural facades.
Maintenance Tips
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Regular Cleaning: Wipe the lamp with a soft, damp cloth to remove dust and dirt. Avoid abrasive cleaners to preserve the finish.
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Shade Care: Clean the spun copper shades gently. The interior has a matt white finish to ensure diffuse light; avoid harsh chemicals to maintain this coating.
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Glass Components: If the lamp includes glass parts, clean them when cold using a soft cloth dampened in lukewarm water with mild detergent. Ensure all moisture evaporates before turning the lamp back on
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Weather Protection: With an IP23 rating, the lamp is protected against water spray less than 60° from vertical. Install it in sheltered outdoor areas to prevent direct exposure to heavy rain.
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Bulb Replacement: Use only manufacturer-recommended bulbs (E27 base, max 100W). Avoid half-mirror bulbs, as they can reflect heat and damage the fixture.
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Electrical Safety: Always disconnect power before performing maintenance or bulb replacement to ensure safety.
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Inspect for Wear: Periodically check for signs of corrosion or damage, especially in outdoor environments. Address any issues promptly to maintain functionality and appearance
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