F8-D85 Modular Surface Mounted LED Downlight 25-35W

What is the F8-D85 Modular Surface Mounted LED Downlight and where is it specified?

At XHLWX (led-project-light.com), a Custom Indoor LED Lighting Manufacturer based in China, we engineer luminaires for the precise demands of architectural specification. The F8-D85 is a high-performance modular surface-mounted LED downlight designed for applications where recessed installation is not feasible, such as concrete ceilings, historic buildings, or spaces with crowded ceiling voids. This luminaire combines a clean, cylindrical aesthetic with powerful, high-quality illumination. Its core strength lies in its modularity and deep-recessed optical system, which provides exceptional visual comfort with a Unified Glare Rating (UGR) consistently below 19. Available in 25W, 30W, and 35W versions, the F8-D85 is an ideal solution for architects, lighting designers, and contractors in the EU, US, and Middle East seeking a versatile, specification-grade fixture for commercial, retail, and hospitality projects.

Photometric and electrical specification

The F8-D85 series is built to specification, allowing for precise customisation to meet project requirements. Full IES and LDT photometric files are available for integration into DIALux lighting design software.

Parameter	Specification	Standard	Notes
Color Temperature (CCT)	2700K, 3000K, 3500K, 4000K, 5000K, 6500K	ANSI C78.377	SDCM <3 for consistent color across all fixtures. Tunable White (TW) and Dim-to-Warm (DTW) available.
Color Rendering & Quality	CRI >80, >90, >95, >98	TM-30-18	High CRI Ra98+ options available. Typical TM-30 values for CRI95+ are Rf 95, Rg 102.
Luminous Efficacy	100-130 lm/W (Lamp)	LM-79-08	System efficacy depends on CCT, CRI, and driver selection. LED chip efficacy is 110-200 lm/W.
Beam Angle & Glare	15°, 24°, 38°, 60° (Lens/Reflector)	EN 12464-1	Deep-recessed light source achieves UGR<19, suitable for office and task areas.
Power & Driver	25W, 30W, 35W (PF >0.9)	IEC 61347	Tridonic, Mean Well, Osram, Philips drivers available. Supports DALI, 0-10V, TRIAC, Casambi.
LED Chip	Citizen, Bridgelux, CREE, Philips, Luminus	LM-80	L80B10 rated at >50,000 hours, ensuring long-term performance and reliability.
Housing & Finish	ADC12 Die-Cast Aluminium	-	D85 x H170mm / 200mm. Standard finishes: Matt White (RAL9016), Matt Black (RAL9005).
IP Rating	IP20	IEC 60529	Designed for indoor, dry locations. Protects against solid objects larger than 12.5mm.
Certifications	CE, RoHS, ErP	EU Directives	Product is fully compliant for specification and sale within the European market.
Warranty	5 Years	-	Comprehensive warranty covers the entire luminaire, including LED chip and driver.

Which spaces is it designed for?

The F8-D85's combination of surface mounting, low glare, and high-quality light makes it adaptable to a wide range of professional settings where both aesthetics and performance are paramount.

How can the F8-D85 enhance a high-end retail environment?

In luxury retail, accurate color representation and focused light are critical. The F8-D85 excels with its CRI 98+ options, which render the textures and colors of merchandise with absolute fidelity. The narrow 15° and 24° beam angles are perfect for creating dramatic accent lighting on displays, drawing customer attention to key products. Furthermore, its deep-recessed optic ensures a UGR<19, providing a comfortable, premium shopping experience without distracting glare. The modular design also allows for easy swaps of optical modules if the store layout changes.

What are the benefits for hotel lobby and corridor lighting?

For hotel projects, especially those with concrete slab ceilings, the surface-mounted design of the F8-D85 is a problem-solver. It provides powerful general illumination without requiring extensive ceiling work. With Dim-to-Warm (DTW) technology, the luminaire can shift from a bright, welcoming 3000K during the day to a warm, intimate 1800K in the evening, all controlled via a central DALI system. Using wider 38° or 60° beam angles ensures smooth, even coverage in lobbies and corridors, achieving specified lux levels of 150-200 lux with ease.

Is this luminaire suitable for modern office and meeting rooms?

Yes, it is an excellent choice for modern offices. The primary requirement for office lighting is visual comfort to enhance productivity, and the F8-D85's optical design guarantees a UGR<19, complying with the European standard EN 12464-1 for workplaces. Paired with high-efficacy chips (up to 130 lm/W) and flicker-free drivers from brands like Tridonic, it contributes to lower energy costs and a healthier work environment. A CCT of 4000K is commonly specified to create a bright, alert atmosphere in open-plan offices and meeting rooms.

Installation, control and compliance (DALI-2 / Casambi / 0-10V, CE / RoHS / ErP)

Installation of the F8-D85 is straightforward. A mounting plate is first secured to the ceiling surface, after which the main luminaire body connects with a simple twist-and-lock mechanism. The integrated driver design means no remote boxes are needed in the ceiling, simplifying the process for electrical contractors.

The fixture is compatible with a comprehensive range of control protocols required for modern smart buildings. Options include:

• DALI-2: For robust, addressable digital control and integration into building management systems (BMS).
• Casambi/BLE: For flexible wireless control via a mobile app, ideal for retrofits and spaces where new control wiring is impractical.
• 0-10V/1-10V: A common analogue dimming standard for simple, reliable control.
• TRIAC (Phase Dimming): Suitable for retrofitting into existing phase-dimmed circuits.

For European specifiers, the F8-D85 is fully compliant with all relevant directives, including CE (Safety), RoHS (Hazardous Substances), and ErP (Energy Efficiency). Our manufacturing facilities are ISO9001 certified, ensuring consistent quality and traceability for every unit produced.

Customisation, MOQ and lead time

As a specialist manufacturer, we offer extensive customisation. Beyond the standard options for wattage (25W, 30W, 35W), CCT, CRI, and beam angle, we can accommodate project-specific needs. This includes custom RAL color finishes for the luminaire housing to match brand aesthetics or interior design palettes, subject to minimum order quantities.

Our standard Minimum Order Quantity (MOQ) for the F8-D85 series is 100 units. For smaller trial orders or mock-ups, please contact our sales team to discuss possibilities.

The typical production lead time for standard configurations is 20-25 working days from order confirmation and deposit. Large or highly customised orders may require additional time, which will be communicated clearly in our formal quotation.

Frequently Asked Questions

Q: What is the highest color rendering quality available for this downlight?

A: We offer exceptional color rendering options, reaching a CRI of up to Ra98. For museum-grade applications, we provide TM-30-18 metrics with an Rf of 95 and an Rg of 102, ensuring that colors are rendered both vividly and accurately. This is achieved using premium LED chips from Citizen or Bridgelux.

Q: Can I get photometric files for my lighting design software?

A: Yes, absolutely. We provide complete photometric data for all configurations of the F8-D85 series. Full IES and LDT files are available upon request for you to import directly into your DIALux or Relux lighting simulation projects. This allows you to accurately predict illuminance levels and light distribution for your space.

Q: What is the typical lead time for a project order of 500 units?

A: For a mid-sized project order of 500 units, our typical production lead time is approximately 25-30 working days. This timeframe allows for component sourcing, assembly, and rigorous quality control testing. We recommend confirming specific CCT and driver requirements early to ensure component availability and a firm delivery schedule.

Q: Is the driver integrated or remote, and what are the dimensions?

A: The F8-D85 features an integrated driver housed within its cylindrical body for a clean, all-in-one installation. The luminaire has a diameter of 85mm and is available in two standard heights: 170mm for the 25W version and 200mm for the 30W/35W versions. This self-contained design simplifies ceiling installation significantly.

Request IES files and a quotation

To move forward with your specification, request a formal quotation, or receive the complete set of IES and LDT photometric files for your DIALux simulations, please contact our project team. At XHLWX (led-project-light.com), a Custom Indoor LED Lighting Manufacturer based in China, we are ready to support your project from initial design to final delivery. Let us help you achieve the perfect lighting solution with the F8-D85 Modular Surface Mounted Downlight.