LED panels are the most commoditized product in commercial lighting — which is exactly why specifying them well matters. The $30 panel and the $110 panel look identical in a ceiling grid until the flicker complaints, yellowed diffusers, and mixed whites arrive.
Edge-lit vs back-lit: the construction decision
- Edge-lit panels run LEDs along the frame, firing into a light-guide plate (LGP). They achieve the slimmest profiles (10 mm) and the most uniform appearance — but the LGP costs efficacy and cheap acrylic LGPs yellow within a few years.
- Back-lit panels aim LEDs directly through a diffuser from behind. Higher efficacy per dollar, no LGP to age, slightly deeper housing (25–40 mm). They have become the volume default.
Choose edge-lit when the ceiling is a design feature or plenum depth is tight; otherwise back-lit is the better value and the more durable light engine.
The four datasheet numbers that separate quality tiers
- UGR — offices need UGR ≤ 19 at the workstation, which in practice means a microprismatic diffuser. An opal panel labeled “UGR<22” is a corridor/support-space product.
- Flicker — ask for percent flicker or SVM at full output and dimmed. “<5%” full-output claims that hide 30% flicker at 20% dim are common in the budget tier.
- CRI — 80 is the floor; 90 for design-led offices, healthcare consulting rooms, and anywhere color judgment happens.
- Binning — ≤3-step MacAdam keeps a 200-panel ceiling looking like one product. Budget lines often bin at 5-step; you will see it.
CCT: pick one, resist the switch
Switchable-CCT drivers are convenient for distributors, and fine to buy — but commission every panel to a single agreed CCT and record it. Mixed settings across a floor plate is the most common panel-related complaint on multi-contractor projects. Typical choices: 3500K (warm-neutral offices), 4000K (the default), 3000K (hospitality-adjacent spaces).
Mounting and the ceiling you actually have
Confirm the grid module before ordering — 600×600 metric panels do not fit imperial 2×2 grids (603 mm) with all frames, and recessed panels need 100 mm+ of clear plenum. Every mainstream panel family offers surface-mount frames and suspension kits; order them with the panels, not as an afterthought.
Emergency and compliance options
Fit-out specs increasingly require a percentage of fixtures on emergency battery packs (90-minute typical). Plug-in emergency modules ordered with the panels cost a fraction of retrofit labor. In EMEA, check the diffuser’s fire classification (TP(a)/TP(b)) against the ceiling requirement.
Price bands (2026, per 600×600 panel)
| Tier | Price | What you get |
|---|---|---|
| Budget | $25–45 | Back-lit, CRI 80, opal, non-dim, 3-yr warranty |
| Mid | $45–80 | Flicker-free driver, DALI option, 5-yr warranty |
| Premium | $80–130 | UGR<19 microprism, CRI 90, 3-step binning, DALI-2 |
Shortlist starting points
Browse the LED panel category on LightKilo to see the manufacturers serving this space — normalized spec tables for individual panels are being added as the catalog grows.