Polyurethane Amorphous Hidden Light Ceiling Luminaire Frame
Technical Specifications
| Material | Polyurethane |
|---|---|
| Surface | Flat, smooth-surfaced organic (amorphous) form |
| Color | White |
| Density | 150-220 kg/m³ |
| Water Absorption | below 1% |
| Dimensional Stability Test | -20 °C / +70 °C |
| Fire Class | B2 (DIN 4102-1) |
| Paintable | Yes |
| Usage | Indoor + Outdoor |
| Water Resistant | Yes |
| Dimensions | 440 × 440 × 160 mm |
| Weight | 0.97 kg |
| Sales Unit | piece |
Details
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Technical drawing: Download DWG (106 KB)
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The PA501 is a premium ceiling fixture designed to integrate modern, organic aesthetics into contemporary interior spaces. This architectural element serves as a transition between functional lighting and sculptural art, providing a soft, diffused glow that enhances the ambient atmosphere. By housing light sources within its fluid, curved profile, it eliminates harsh glare and replaces it with a gentle, indirect illumination that adds depth to any room.
With dimensions of 440x440 mm and a depth of 160 mm, this square-profile frame features a circular, recessed central dome that creates a striking visual depth. Manufactured from high-density rigid material (150-220 kg/m³), the fixture possesses the structural hardness of wood but remains exceptionally lightweight. Its closed-cell composition provides low water absorption (below 1%), making it highly resistant to moisture, rot, and dimensional warping over time.
Visually, the PA501 stands out due to its clean, minimalist outer square border contrasted by a smooth, amorphously curved inner dome. When viewed from below, the transition from the flat ceiling plane to the recessed illumination well is seamless, reflecting light beautifully across its matte white surface. The factory-applied primer coat provides an ideal substrate for custom finishing, allowing designers to match the ceiling's exact color palette.
This hidden light fixture is engineered strictly for indoor installations. It is highly suited for modern living rooms, minimalist bedroom ceilings, high-end hotel lobbies, boutique retail spaces, and upscale restaurants. It can be integrated into gypsum board ceilings or suspended ceiling systems to define functional zones, such as highlighting dining areas or creating focal points in corridors.
Compared to heavy plaster, fragile glass-fiber, or hard-to-shape MDF alternatives, this unit is shatterproof and extremely easy to install. The installation process involves preparing a clean, dry ceiling surface, applying a high-quality polyurethane (PU) mounting adhesive, and securing the frame mechanically with screws. After applying joint putty, sanding with 180-220 grit paper, and applying an optional paint manufacturer's primer for warranty purposes, it can be finished with two coats of water-based or synthetic paint.
- The PA501 ceiling hidden light frame is designed exclusively for interior architecture, offering an elegant way to incorporate indirect lighting
- In residential properties, it is ideal for modern living rooms, dining areas, and master bedrooms, where it replaces traditional, bulky chandeliers with a sleek, recessed light source
- In commercial environments, such as luxury hotel lobbies, reception areas, and executive boardrooms, this fixture creates a highly professional, minimalist aesthetic
- It is also widely used in boutique retail shops and cozy restaurants to establish a warm, welcoming ambiance
- Since it is moisture-resistant, it can even be installed in well-ventilated master bathrooms or home spa areas, provided it is not in direct contact with running water
- For optimal visual impact, install multiple units in a symmetrical grid pattern across large ceilings, or use a single unit as a central design statement above a dining table or reception desk
- Installing the PA501 ceiling fixture is a straightforward process requiring basic carpentry tools
- First, ensure the mounting surface is clean, dry, and free of dust
- Position the frame on the ceiling and mark the placement
- Apply a generous bead of polyurethane (PU) mounting adhesive to the rear contact edges; do not use silicone, as it lacks the necessary structural bond
- Press the unit firmly against the ceiling
- To ensure long-term safety, mechanical fastening with screws is mandatory
- Once secured, cover the screw heads and any minor gaps with acrylic putty
- After the putty dries, sand the surfaces smooth using 180-220 grit sandpaper
- While the product arrives factory-primed, applying an additional primer recommended by your paint manufacturer is optional but highly recommended to secure paint warranties
- Finish by applying two coats of high-quality water-based or synthetic paint to match your ceiling
- Maintaining the PA501 ceiling light frame is simple due to its durable, non-porous surface
- Regular dusting with a dry, soft microfiber cloth or a static duster is usually sufficient to keep the recessed dome free of debris
- For deeper cleaning, the surface can be wiped gently with a slightly damp cloth
- Avoid using harsh chemical cleaners, acidic solutions, or abrasive scouring pads, as these can damage the paint finish
- Because the rigid structure is highly impact-resistant, it will not crack or chip under normal indoor conditions
- If the paint becomes scuffed over time, the surface can be easily repainted
Can the PA501 be used on outdoor ceilings or patio areas?
No, the PA501 is strictly designed for dry and semi-humid indoor applications. While the material is highly moisture-resistant, this specific light frame is not rated for outdoor weather conditions, wind loads, or direct UV exposure. For exterior lighting setups, you should select products specifically certified for outdoor use and finish them with specialized UV-resistant exterior coatings.
What are the main benefits of polyurethane over traditional plaster for a light frame?
Polyurethane offers significant advantages over plaster. It is exceptionally lightweight, which reduces structural load on your ceiling and makes installation safer and faster. Unlike fragile plaster, polyurethane is shatterproof and will not crack during shipping, handling, or installation. Additionally, it has a water absorption rate under 1%, meaning it won’t degrade, mold, or warp in humid indoor environments, whereas plaster easily absorbs moisture and cracks over time.
Is a special type of paint required to finish this ceiling fixture?
The PA501 comes with a factory-applied primer, making it ready for painting. You can use standard interior water-based (acrylic or latex) or synthetic paints. To ensure optimal adhesion and preserve any paint manufacturer warranties, applying an additional specialized primer before your final two coats of paint is highly recommended, though optional. Do not use solvent-heavy paints without a proper primer base.
How is the actual light bulb or LED strip integrated into the PA501?
The PA501 is designed as a decorative framing and reflective housing. The electrical wiring, socket, or LED light strip should be installed directly into the ceiling junction box behind or within the recessed dome area of the frame. Ensure that you use low-heat emitting light sources, such as LEDs, to prevent heat buildup, keeping the operating temperature well within the range in which dimensional stability has been tested, -20 °C / +70 °C.
Is mechanical screw fastening absolutely necessary during installation?
Yes, mechanical fastening with screws is mandatory for safety. While high-quality polyurethane (PU) mounting adhesive provides the primary bond, screws ensure the fixture remains securely anchored to the ceiling substrate while the adhesive cures and throughout its lifespan. Once the screws are driven in, the heads can be easily countersunk, filled with acrylic putty, sanded smooth, and painted over to become completely invisible.