Every lighting request that lands on my desk starts with the same question: What are you replacing, and how much time do you have? In my role coordinating lighting orders for contractors and facility teams, I've handled 200+ rush orders in four years, including same-day turnarounds for clients who discovered a problem 36 hours before a deadline. The answer to almost every lighting question depends on your situation. There is no single best fixture. So let's sort your situation first.
Here are the three scenarios I hear most often:
- Suspended ceiling with old troffers. If you're working with a drop ceiling and 2x2 grid openings, you need a Lithonia Lighting 2x2 LED flat panel.
- Drywall or recessed can locations. If you're cutting into drywall or replacing an existing downlight, look at the Lithonia Lighting LBR6. If audio is also in the picture, you're really asking about downlight speakers.
- Under cabinet spaces. If the light is under a counter, cabinet, or shelf, you need to know how to replace under cabinet lighting without turning a small swap into an electrical project.
Across all three, there's a fourth question that sneaks up on people: should this be smart lighting? I'll get to that after the fixture decisions.
Suspended ceilings: the Lithonia Lighting 2x2 LED flat panel
When the ceiling is a suspended grid and the old fixture is a 2x2 troffer, the least-pain path is usually a direct-size replacement. A Lithonia Lighting 2x2 LED flat panel fits the same opening, uses the existing grid, and in most retrofits, it connects to the existing junction box. The energy difference is not subtle. According to the U.S. Department of Energy, LEDs use at least 75% less energy and last 25 times longer than incandescent bulbs (energy.gov, retrieved January 2025). The upgrade pays for itself faster than most contractors assume.
Before you order, verify the details. In March 2024, I had a contractor call 36 hours before his ceiling crew showed up, needing 46 panels for a tenant build-out. Normal lead time was four days. We pulled stock from another branch, paid extra freight, and saved the schedule. The alternative was a penalty clause. I told a supplier we needed it by Thursday. They heard Friday if we're lucky. We discovered that when the driver showed up after the crew left. Since then, I treat lead time as its own checklist item, not a hopeful guess. When I'm triaging a rush order, I check five things on a 2x2 panel: grid type, voltage, driver dimming, color temperature, and lumen output. The grid type matters more than people think. A Tegular grid needs a different flange than a flat lay-in grid. Getting that wrong means the panel sits above the ceiling tile line or falls through.
Color temperature is the other frequent argument. 4000K is the typical office default, 3500K works for hospitality and retail, and 5000K is for production spaces. If the owner isn't sure, choose 4000K. It offends the fewest people.
There's something satisfying about a row of new panels, all evenly lit, after a stressful install. It's the payoff for the boring part: checking the details on paper first. The 12-point checklist I created after my third mistake has saved us an estimated $8,000 in potential rework.
Drywall and downlights: the Lithonia Lighting LBR6
If you don't have a suspended grid, a flat panel isn't your answer. For most 6-inch downlight replacements, the Lithonia Lighting LBR6 is the fixture I default to. It is designed for retrofit work, which means less ceiling damage than a full new-construction housing in many cases, and it's stocked widely enough that lead times stay reasonable. As of January 2025, at least, that's still true.
The LBR6 handles the common commercial questions: selectable color temperature on some versions, dimmable driver options, and a clean look. If you are putting a downlight in an occupied office or a lobby, don't forget to check the trim style and whether the driver is accessible above the ceiling. You don't want to discover a dead driver after the ceiling is closed.
Now, the part I get asked about a lot: downlight speakers. I have mixed feelings. On one hand, a speaker downlight saves ceiling holes and keeps the design clean. On the other hand, you are combining two products with different lifecycles. An LED driver can outlast a speaker cone. If the speaker fails, you have to replace the whole unit to get the light back. That said, for background audio in a small cafe, a hotel corridor, or a conference room lobby, downlight speakers can be a good tradeoff. Just don't sell them as a music system. They are for announcements and background sound.
One piece of advice that surprises people: when someone says they want a speaker downlight, I ask whether the ceiling is open or closed. If it's open, separate speakers and regular downlights are usually less headache. If it's closed or finished, a speaker downlight might be the only practical way to add audio without gutting the ceiling.
How to replace under cabinet lighting without starting a project
Under cabinet lighting is the request that makes people overthink. Most replacements are simple if you stop and identify the existing system first. Here's the process I use:
- Turn off the circuit at the breaker. The wall switch isn't enough. I've caught live circuits with the switch off and no visible signage to warn me.
- Find the driver or transformer. If the old fixture is low voltage 12V or 24V, there is a black power box somewhere under the sink or in an adjacent cabinet. Label the wires before you disconnect anything.
- Measure the mounting centers. This is exactly where communication failures happen. I told a client we would make it fit, and we discovered the new fixture's mounting slots were half an inch outside the old screw holes. It was fixable, but it cost an extra trip and a custom bracket.
- Choose the voltage. If the existing wiring is line voltage, use a line-voltage LED fixture. If it's low voltage, you can keep the existing transformer if it's rated for LED and replace the fixture, or replace the transformer too. Do not assume a low-voltage transformer can handle an LED load.
- Check the clearance above the fixture. Under cabinet lights need airflow. If the driver is pressed against the cabinet bottom, heat will shorten its life.
Five minutes of verification beats five days of correction. This is the rule I keep coming back to. Reading the spec sheet before you lift the ladder is the cheapest insurance you can buy.
Where smart lighting fits
Smart lighting is not one product. It's a control strategy. If the owner wants occupancy sensing, daylight dimming, scheduling, or integration with a building management system, you need to decide that before you order fixtures, not after.
For commercial projects, the fixtures I order with smart controls often use Zigbee-based communication. Zigbee is an established mesh protocol for lighting controls (Source: Connectivity Standards Alliance). Lithonia Lighting is part of Acuity Brands, and Acuity's control ecosystem includes Zigbee controllers and sensors that pair with these fixtures. If there is any chance the owner will want controls later, get a dimmable driver now and run the necessary control wiring. Retrofitting later means opening the ceiling or pulling new wire, which turns a $200 fixture decision into a $2,000 project.
I have mixed feelings about smart lighting. On one hand, it adds commissioning time to a rush order. On the other, adding it later costs more. The practical compromise: specify a dimmable driver and a neutral wire today, even if you don't install the smart controller until the next phase.
Which scenario are you in
Here is the 30-second decision guide:
- Dropped ceiling with 2x2 openings: start with a Lithonia Lighting 2x2 LED flat panel. Confirm the grid type and driver before ordering.
- Drywall ceiling or existing 6-inch can: start with the Lithonia Lighting LBR6. If audio is part of the request, compare downlight speakers against separate speakers.
- Under cabinet or shelf: follow the replacement process above, and confirm voltage before you buy anything.
- Owner asks for scheduling, occupancy sensing, or integration: bring smart lighting into the conversation now, not after the fixtures are on the ceiling.
The fastest way to avoid an emergency is to spend ten minutes verifying the basics. Fixture size, grid type, voltage, driver, color temperature, lead time. If you do that, you won't need an emergency lighting specialist. Which means even if your project is urgent, you can act like it isn't.