"What wattage LED panel do I need?" is the most common question on a drop ceiling job. The answer depends on what you are replacing, the ceiling height and the space. Here is a quick way to land on the right size and setting.
Replacing fluorescent troffers
| Old fixture | Old watts | LED panel |
|---|---|---|
| 2x2 with 2 or 3 lamp U-tube or F17T8 | about 60 to 90W | 2x2 LED panel, 20 to 40W |
| 2x4 with 2 lamp F32T8 | about 60W | 2x4 LED panel, 30 to 40W |
| 2x4 with 3 lamp F32T8 | about 85W | 2x4 LED panel, 40 to 50W |
| 2x4 with 4 lamp F32T8 or F40T12 | about 110 to 170W | 2x4 LED panel, 50 to 72W |
| 1x4 with 2 lamp F32T8 | about 60W | 1x4 LED panel, 25 to 40W |
These are starting points. Most panels on this site have field selectable wattage, so you can set the output on site and adjust if a room reads too bright or too dim.
2x2, 2x4 or 1x4?
Match the existing grid opening first. If you are designing a new ceiling:
- 2x4 for offices, classrooms and open areas. Most light per fixture, fewest fixtures.
- 2x2 for smaller rooms, corridors and a more even, modern look.
- 1x4 for narrow corridors, restrooms and rows over desks or counters.
Color temperature
3500K feels warm and suits hospitality and some healthcare. 4000K is the standard for offices and schools. 5000K reads clean and bright for retail, labs and back of house. Selectable CCT panels let you pick on site.
High ceiling with a drop grid? Some panels are rated for high bay use at higher wattages. Look for "High Bay Rated" in the product name when the grid is 15 feet or more above the floor.
Edge lit or backlit? Read backlit vs edge lit LED panels. Keeping the old housings? Read retrofit kits vs new fixtures.
Shop LED flat panels
2x2, 2x4 and 1x4 panels with selectable wattage and color temperature, at contractor pricing.
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