Product Description
NPDBLSW-E24/334WEM 2X4 LED Back-lit Panel Selectable Wattage & CCT (30/35/40K) 120-277V from Nora Lighting is a backlit LED panel built for clean, uniform general illumination in offices, conference rooms, libraries, and other task-oriented spaces. Dual onboard tuning switches let you set both light output and color temperature in the field, so one fixture can adapt to changing layouts, ceiling heights, and comfort preferences.
Quick Summary
- Series: NPDBLSW LED Backlit Panels with Selectable Lumens & Selectable CCT
- Size: Two-by-four panel
- Selectable CCT: Three thousand K / three thousand five hundred K / four thousand K (preset at three thousand K)
- Selectable wattage: Thirty-six W / forty W / forty-five W (field selectable)
- Selectable lumens: Adjustable output range for the series from roughly two thousand six hundred lumens up to roughly five thousand seven hundred lumens
- Dimming: Zero to ten volt dimming down to five percent
- Input: Universal input rating up to three hundred forty-seven volts; emergency configurations use one hundred twenty to two hundred seventy-seven volts
- Listings: cULus damp location, DLC listed, FCC certified
- Warranty: Five-year limited warranty
- Free shipping: Free shipping on orders over $250
Product Benefits
- One panel, multiple outcomes: Field-selectable wattage and CCT reduce SKU count while making it easy to match brightness and color across a space.
- Cleaner ceiling appearance: The white diffused lens softens the LED diode image for a smooth, uniform look.
- Comfortable, controllable light: Wide, even distribution paired with zero to ten volt dimming helps support visual comfort in work and learning environments.
- Lower maintenance: A sealed construction helps limit bugs and dirt reaching the lens area, while the driver is serviceable via an accessible door.
Key Features
- Selectable Lumens switch: Choose from multiple output levels (series range spans approximately two thousand six hundred to approximately five thousand seven hundred lumens).
- Selectable CCT switch: Three-position sliding switch for three thousand K, three thousand five hundred K, or four thousand K.
- Universal input capability: Designed for broad voltage applications (up to three hundred forty-seven volts input; emergency battery configurations use one hundred twenty to two hundred seventy-seven volts).
- Zero to ten volt dimming: Dims down to five percent for energy savings and occupant comfort.
- Damp location listed: Suitable for many commercial interiors and covered areas where damp rating is required.
- Mounting flexibility: Surface, pendant, and hard ceiling recessed kits are available for design and retrofit needs.
Specifications
Technical Specs
| Product type | LED backlit panel with selectable lumens and selectable CCT |
| Size | Two-by-four panel format |
| Selectable CCT | Three thousand K / three thousand five hundred K / four thousand K (factory preset at three thousand K) |
| Selectable wattage | Thirty-six W / forty W / forty-five W (field selectable) |
| Dimming | Zero to ten volt dimming down to five percent |
| Color rendering | Eighty-plus CRI |
| Rated life | Sixty thousand hours at L seventy |
| Operating temperature | Zero degrees C to forty-five degrees C |
Physical Specs
| Construction | LED array mounted on the back of an aluminum frame with a white opalescent diffused lens to optimize output and reduce LED diode image |
| Lens material | PMMA (polymethyl methacrylate), lightweight and shatter resistant |
| Finish | White |
| Wiring access | Rear wiring compartment with replaceable driver accessible via a service door secured with screws; includes multiple half-inch knockouts for field wiring |
Performance Specs
| Lumen output (two-by-four) | Selectable output with published values around four thousand six hundred two lumens, five thousand fifty lumens, or five thousand seven hundred seven lumens (values vary by selected CCT) |
| Beam spread | Wide flood distribution (typical photometric testing indicates broad coverage suitable for general illumination) |
| Listings | cULus listed for damp locations; DLC listed; FCC certified |
| Packaging note | Packaged and sold in multiples of two |
Application Examples
- Commercial offices: Open office lighting, private offices, and collaboration zones
- Conference and training rooms: Comfortable, dimmable general illumination
- Education: Classrooms, libraries, study areas, and administration spaces
- Healthcare and corridors: Clean, uniform light with controllable output and CCT
- Retail back-of-house: Stock rooms and staff areas needing consistent visibility
Installation Tips
- Set switches before final mounting: Choose your desired lumen level (wattage) and CCT setting prior to closing up the install.
- Plan for mounting style: This panel can be used with surface frames, recessed hard ceiling kits, or pendant kits depending on the application.
- Use proper dimming wiring: For zero to ten volt dimming, run the control pair separately from line voltage as required by local code and best practice.
- Serviceability matters: Keep the rear wiring compartment accessible where possible for future driver service through the provided access door.
- Respect insulation guidance: If used in insulated ceilings, follow the manufacturer’s clearance notes and avoid direct contact with spray foam insulation.
- Confirm damp location suitability: Use appropriate sealing practices and follow code requirements in damp-rated environments.
FAQ
What does “selectable wattage and CCT” mean on this panel?
This panel includes two onboard switches. One lets you choose the wattage (which changes light output), and the other lets you select the color temperature between three thousand K, three thousand five hundred K, and four thousand K.
Is the NPDBLSW panel suitable for offices and classrooms?
Yes. The panel is designed for general illumination in task areas like offices, conference rooms, and libraries, with a diffused lens that helps provide smooth, uniform light.
Does it work with dimmers?
It supports zero to ten volt dimming and can dim down to five percent when used with compatible controls and properly installed low-voltage dimming wiring.
Is it rated for damp locations?
Yes. The panel is cULus listed for damp locations, making it a fit for many commercial interiors and covered areas where damp rating is required.
What voltage is supported?
The series is designed for broad voltage applications up to three hundred forty-seven volts. Emergency battery configurations operate on one hundred twenty to two hundred seventy-seven volts.
How do I choose the best CCT for the space?
Three thousand K provides a warmer look, three thousand five hundred K is a balanced neutral white, and four thousand K appears crisper and cooler. Many offices choose neutral or cool settings for alertness and visual clarity.
What mounting options are available?
Optional accessories support surface mounting frames, recessed hard ceiling kits, pendant mounting, and a junction box accessory for daisy chaining, depending on the project needs.
Is the driver replaceable?
Yes. The rear wiring compartment includes a replaceable driver that can be accessed through a service door, supporting easier long-term maintenance.
