Thin LED Strip Lights
Thin LED strip from 3 to 6 mm wide for shadow gaps, shelf edges, mirror frames and slim channels: 51 models in SMD, dot-free COB and SCOB, tunable white, RGB and mini neon flex, on 12V and 24V.
This page gathers every board we supply at 6 mm wide or less, sorted by width, so you can start from the slot or channel you have. Each model also appears on its own product page with the full spec: SMD, COB, SCOB, tunable white, RGB and neon flex.
Most thin boards draw about 6 W/m (1.8 W/ft). That keeps the heat low enough for a narrow channel, and the best 4 mm board still reaches 117–130 lm/W. White models render at Color Rendering Index, 0–100: how truthfully the light shows colors next to a reference source. Ra≥90 is the usual bar for interiors. 90 or higher, 2700K to 6500K. IP20 boards are standard; sealed versions of most models are built to order.
Why contractors spec our thin strip
3, 3.5, 4, 4.5, 5 and 6 mm
Pick the board by the slot: every width from 3 mm up, in SMD, COB and SCOB.
Up to 130 lm/W at 4 mm
The 2835 160 LEDs/m thin board runs 117–130 lm/W at Ra≥90 on 24V.
6 W/m for narrow channels
Most thin boards draw 1.8 W/ft, so a slim channel can carry the heat away.
White, tunable or RGB
A 4 mm tunable white board and 4.5 and 5 mm RGB boards keep color control in a thin line.
Short cut points
Cut every 0.49 in (12.5 mm) on 3 mm 2110 at 12V, or every 0.33 in (8.33 mm) on 5 mm cuttable boards.
Dot-free options
COB and SCOB boards from 2.7 to 6 mm give a continuous line with no diffuser.
Five widths, 51 thin models, one spec conversation
3 mm & 3.5 mm Thin LED Strip
The narrowest boards we build: 3 mm SMD in 2025, 2110 and 2216 packages, 3 mm dot-free COB, and two 3.5 mm boards. They fit hairline reveals, glass-shelf edges, mirror frames and the smallest aluminum channels. Most run at 6 W/m (1.8 W/ft) and come in 16 ft (5 m) lengths fed from one end.
| Model | Product line | Width | LEDs/m | Power W/ft (W/m) | Output lm/ft (lm/m) | Voltage | Cut increment |
|---|---|---|---|---|---|---|---|
| UT-S2025-168-UN3 | SMD LED Strip | 3 mm | 168 | 1.8 W/ft (6 W/m) | 165–183 lm/ft (540–600 lm/m) | 12V | 0.70 in (17.86 mm) |
| UT-S2110-240-UN3 | SMD LED Strip | 3 mm | 240 | 1.5 W/ft (5 W/m) | 123–139 lm/ft (405–455 lm/m) | 12V / 24V | 0.49 in (12.5 mm) @12V / 0.98 in (25 mm) @24V |
| UT-S2216-240-UN3 | SMD LED Strip | 3 mm | 240 | 1.8 W/ft (6 W/m) | 157–174 lm/ft (516–570 lm/m) | 24V | 0.98 in (25 mm) |
| UT-C528-3 | COB LED Strip | 3 mm | 528 | 1.8 W/ft (6 W/m) | 165–183 lm/ft (540–600 lm/m) | 12V | 0.89 in (22.73 mm) |
| UT-C400-3 | COB LED Strip | 2.7 / 3 mm | 400 | 2.1 W/ft (7 W/m) | — | 12V/24V | 0.39 in (10 mm) @12V / 0.79 in (20 mm) @24V |
| UT-S2835-120-UN35 | SMD LED Strip | 3.5 mm | 120 | 1.8 W/ft (6 W/m) | 157–174 lm/ft (516–570 lm/m) | 12V | 0.98 in (25 mm) |
| UT-S2216-168-UN35 | SMD LED Strip | 3.5 mm | 168 | 1.8 W/ft (6 W/m) | 157–174 lm/ft (516–570 lm/m) | 12V | 0.70 in (17.86 mm) |
Output is the 2700K–6500K range on bare strip; a dash means the figure is confirmed with your quote.
4 mm & 4.5 mm Thin LED Strip
The widest choice of thin board. 4 mm SMD runs from 120 to 280 LEDs/m, and the 2835 160 LEDs/m board reaches 117–130 lm/W. 4 mm dot-free COB is here too, along with a 4 mm tunable white board and a 4.5 mm RGB board, so a slim channel can still change color temperature or color.
| Model | Product line | Width | LEDs/m | Power W/ft (W/m) | Output lm/ft (lm/m) | Voltage | Cut increment |
|---|---|---|---|---|---|---|---|
| UT-S2835-120-UN4-ECO | SMD LED Strip | 4 mm | 120 | 1.8 W/ft (6 W/m) | 168–187 lm/ft (552–612 lm/m) @12V | 12V / 24V | 0.98 in (25 mm) @12V / 1.97 in (50 mm) @24V |
| UT-S2835-160-UN | SMD LED Strip | 4 mm | 160 | 1.8 W/ft (6 W/m) | 214–238 lm/ft (702–780 lm/m) | 24V | 1.97 in (50 mm) |
| UT-S2110-240-UN | SMD LED Strip | 4 mm | 240 | 1.8 W/ft (6 W/m) | 139–176 lm/ft (456–576 lm/m) | 12V / 24V | 0.49 in (12.5 mm) @12V / 0.98 in (25 mm) @24V |
| UT-S2110-280-UN | SMD LED Strip | 4 mm | 280 | 1.5 W/ft (5 W/m) | 139–163 lm/ft (455–535 lm/m) | 24V | 0.98 in (25 mm) |
| UT-S2216-120-UN | SMD LED Strip | 4 mm | 120 | 1.8 W/ft (6 W/m) | 144–166 lm/ft (474–546 lm/m) | 24V | 1.97 in (50 mm) |
| UT-S2216-140-UN | SMD LED Strip | 4 mm | 140 | 1.8 W/ft (6 W/m) | 181–201 lm/ft (594–660 lm/m) | 24V | 1.97 in (50 mm) |
| UT-S2216-180-UN | SMD LED Strip | 4 mm | 180 | 1.8 W/ft (6 W/m) | 157–174 lm/ft (516–570 lm/m) | 12V | 0.66 in (16.67 mm) |
| UT-S2216-204-UN | SMD LED Strip | 4 mm | 204 | 1.8 W/ft (6 W/m) | 143–155 lm/ft (468–510 lm/m) | 24V | 1.16 in (29.4 mm) |
| UT-C420-4 | COB LED Strip | 4 mm | 420 | 1.8 W/ft (6 W/m) | 148–165 lm/ft (486–540 lm/m) | 24V | 0.66 in (16.67 mm) |
| UT-C480-4 | COB LED Strip | 3 / 4 / 5 mm | 480 | — | — | 12V/24V | — |
| UT-T280-4-2110 | Tunable White LED Strip | 4 mm | 280 | 2.4 W/ft (4+4) (8 W/m) | 238 lm/ft (780 lm/m) | 24V | 1.97 in (50 mm) |
| UT-R120-45-2835 | RGB & RGBW LED Strip | 4.5 mm | 120 | 2.9 W/ft (9.6 W/m) | 109 lm/ft (358 lm/m) | 24V | 1.97 in (50 mm) |
Output is the 2700K–6500K range on bare strip; a dash means the figure is confirmed with your quote.
5 mm Thin LED Strip
5 mm is the common size for wardrobe edges, stair nosings, display frames and 6–8 mm channels. These boards run 12V or 24V. The 5 mm cuttable boards trim every 0.33 in (8.33 mm), and dot-free COB and SCOB boards come in the same width. A 5 mm RGB board is listed here too.
| Model | Product line | Width | LEDs/m | Power W/ft (W/m) | Output lm/ft (lm/m) | Voltage | Cut increment |
|---|---|---|---|---|---|---|---|
| UT-S2835-120-UN | SMD LED Strip | 4 / 5 mm | 120 | 2.9 W/ft (9.6 W/m) | 240–310 lm/ft (787–1017 lm/m) | 12V / 24V | 0.98 in (25 mm) @12V / 1.97 in (50 mm) @24V |
| UT-S2835-120-UN5-ECO | SMD LED Strip | 5 mm | 120 | 1.8 W/ft (6 W/m) | 168–187 lm/ft (552–612 lm/m) | 12V | 0.98 in (25 mm) |
| UT-S2835-140-UN | SMD LED Strip | 5 mm | 140 | 2.4 W/ft (8 W/m) | 234–246 lm/ft (768–808 lm/m) | 24V | 1.97 in (50 mm) |
| UT-S2835-150-UN | SMD LED Strip | 5 mm | 150 | 1.8 W/ft (6 W/m) | 168–187 lm/ft (552–612 lm/m) | 12V | 0.79 in (20 mm) |
| UT-S3014-240-UN | SMD LED Strip | 5 mm | 240 | 1.8 W/ft (6 W/m) | 152–157 lm/ft (498–516 lm/m) | 12V | 0.98 in (25 mm) |
| UT-S2216-192-UN | SMD LED Strip | 5 mm | 192 | 1.8 W/ft (6 W/m) | 148–165 lm/ft (486–540 lm/m) | 24V | 1.23 in (31.25 mm) |
| UT-S2216-240-UN | SMD LED Strip | 5 mm | 240 | 1.8 W/ft (6 W/m) | 141–159 lm/ft (462–522 lm/m) | 24V | 0.98 in (25 mm) |
| UT-S2835-120-FC5 | SMD LED Strip | 5 mm | 120 | 2.7 W/ft (9 W/m) | 261–290 lm/ft (855–950 lm/m) | 12V | 0.33 in (8.33 mm) |
| UT-S2835-120-FC5-24V | SMD LED Strip | 5 mm | 120 | 2.7 W/ft (9 W/m) | 285–315 lm/ft (936–1,035 lm/m) | 24V | 0.33 in (8.33 mm) |
| UT-C400-5 | COB LED Strip | 5 mm | 400 | 1.8 W/ft (6 W/m) @12V | 179–194 lm/ft (588–636 lm/m) | 12V/24V | 0.79 in (20 mm) @12V |
| UT-C400-5-LV | COB LED Strip | 5 mm | 400 | 2.4 W/ft (8 W/m) | — | 5V | 0.39 in (10 mm) |
| UT-SC300UN-6 | SCOB LED Strip | 5 mm | 300 | 1.8 W/ft (6 W/m) | 168–183 lm/ft (552–600 lm/m) | 12V | 0.39 in (10 mm) |
| UT-SC308UN-6 | SCOB LED Strip | 5 mm | 308 | 1.8 W/ft (6 W/m) | 190–205 lm/ft (624–672 lm/m) | 24V | 0.89 in (22.7 mm) |
| UT-R120-5 | RGB & RGBW LED Strip | 5 mm | 120 | 2.4 W/ft (8 W/m) | 110 lm/ft (360 lm/m) | 24V | 1.97 in (50 mm) |
Output is the 2700K–6500K range on bare strip; a dash means the figure is confirmed with your quote.
6 mm Narrow LED Strip
One step up from the ultra-narrow boards, for channels around 8 mm inside. These boards carry more LEDs and more output: 6 mm cuttable 2835 at up to 1,116 lm/m, dot-free SCOB at up to 135 lm/W, a CRI 97 SCOB board, and a 6 mm side-view COB for edge lighting.
| Model | Product line | Width | LEDs/m | Power W/ft (W/m) | Output lm/ft (lm/m) | Voltage | Cut increment |
|---|---|---|---|---|---|---|---|
| UT-S2835-168-UN | SMD LED Strip | 6 mm | 168 | 2.4 W/ft (8 W/m) | 234–246 lm/ft (768–808 lm/m) | 24V | 1.41 in (35.71 mm) |
| UT-S2110-180 | SMD LED Strip | 6 mm | 180 | 2.4 W/ft (8 W/m) | 193–224 lm/ft (632–736 lm/m) | 24V | 1.31 in (33.33 mm) |
| UT-S2835-160-FC | SMD LED Strip | 6 mm | 160 | 2.4 W/ft (8 W/m) | 219–244 lm/ft (720–800 lm/m) | 24V | 0.25 in (6.25 mm) |
| UT-S2835-160-FC-HO | SMD LED Strip | 6 mm | 160 | 3.7 W/ft (12 W/m) | 306–340 lm/ft (1,004–1,116 lm/m) | 24V | 0.25 in (6.25 mm) |
| UT-SC320HE-8 | SCOB LED Strip | 6 mm | 320 | 2.4 W/ft (8 W/m) | 305–329 lm/ft (1000–1080 lm/m) | 24V | 0.98 in (25 mm) |
| UT-SC320CRI97-8 | SCOB LED Strip | 6 mm | 320 | 2.4 W/ft (8 W/m) | 232–256 lm/ft (760–840 lm/m) | 24V | 0.98 in (25 mm) |
| UT-C320-6-SV | COB LED Strip | 6 mm | 320 | 2.4 W/ft (8 W/m) | — | 12V | 0.25 in (6.25 mm) |
Output is the 2700K–6500K range on bare strip; a dash means the figure is confirmed with your quote.
Mini Neon Flex — 3 to 5 mm Wide
When a thin line has to be weather-sealed or bent into shapes, mini neon flex keeps the width at 3 to 5 mm with the strip inside a silicone body. Side-bend profiles follow letterforms and curves; the COB versions give a fully dot-free line. Width × height is listed for each profile.
| Model | Product line | Width | LEDs/m | Power W/ft (W/m) | Output lm/ft (lm/m) | Voltage | Cut increment |
|---|---|---|---|---|---|---|---|
| UT-N0306-SB | LED Neon Flex | 3×6 mm | — | 1.8 W/ft (6 W/m) | 91 lm/ft (300 lm/m) | 24V | 0.98 in (25 mm) |
| UT-N0406-SB | LED Neon Flex | 4×6 mm | — | 1.8 W/ft (6 W/m) | 91 lm/ft (300 lm/m) | 24V | 0.98 in (25 mm) |
| UT-N0408-SB | LED Neon Flex | 4×8 mm | — | 1.8 W/ft (6 W/m) | 86 lm/ft (282 lm/m) | 24V | 1.97 in (50 mm) |
| UT-N0408-SB-FC | LED Neon Flex | 4×8 mm | — | 2.2 W/ft (7.2 W/m) | 68–77 lm/ft (223–252 lm/m) | 24V | 0.28 in (7.14 mm) |
| UT-N0408-S-MC | LED Neon Flex | 4×8 mm | — | 2.9 W/ft (9.6 W/m) | — | 24V | 0.28 in (7.14 mm) |
| UT-N0410-SB | LED Neon Flex | 4×10 mm | — | 2.4 W/ft (8 W/m) | 66 lm/ft (216 lm/m) | 24V | 1.41 in (35.7 mm) |
| UT-N0508-SB | LED Neon Flex | 5×8 mm | — | 3.0 W/ft (10 W/m) | 131 lm/ft (430 lm/m) | 24V | 1.97 in (50 mm) |
| UT-N0305-COB | LED Neon Flex | 3×5 mm | — | 1.5 W/ft (5 W/m) | 91–122 lm/ft (300–400 lm/m) | 24V | 0.98 in (25 mm) |
| UT-ND05-COB | LED Neon Flex | Ø 5 mm | — | 1.5 W/ft (5 W/m) | 91–122 lm/ft (300–400 lm/m) | 24V | 0.98 in (25 mm) |
| UT-N0407-COB | LED Neon Flex | 4×7 mm | — | 2.1 W/ft (7 W/m) | 149–171 lm/ft (490–560 lm/m) | 24V | 1.97 in (50 mm) |
| UT-N0408-SB-COB | LED Neon Flex | 4×8 mm | — | 2.1 W/ft (7 W/m) | 128–171 lm/ft (420–560 lm/m) | 24V | 1.97 in (50 mm) |
Output is the 2700K–6500K range on bare strip; a dash means the figure is confirmed with your quote.
Certifications
Products are sourced from qualified manufacturing partners, are CE Marked, and are available with UL Listed, ETL Listed, FCC compliant, RoHS compliant and other applicable configurations. Certification coverage varies by model. Certification is held by the original manufacturing partner. Documentation and listing information are available upon request.
Projects outside North America: products are CE Marked, with RoHS compliant options and drivers matched to local mains. International orders
Related guides
Specification, power and installation guides for this range.
Frequently asked questions
What is the thinnest LED strip you supply?
3 mm wide boards in SMD (2025, 2110 and 2216 packages) and dot-free COB, plus one COB board at 2.7 mm. Thinner lines are usually mini neon flex or CSP strip, which are thin in height rather than width.
Do thin LED strips get hot?
Less than you might expect. Most of our 3–5 mm boards draw 6 W/m (1.8 W/ft), about the same as a standard low-power strip, and they still need to be mounted on aluminum, not wood or plastic. The cuttable 5 and 6 mm boards run at 8–12 W/m and need a channel to carry the heat away.
What size channel do I need for a 4 mm LED strip?
Pick a channel whose inside width is at least the board width plus about 1 mm, so a 4 mm strip needs 5 mm inside. Measure the actual slot, because adhesive tape and solder pads add a little to the board.
How long can a thin LED strip run?
Plan on 16 ft (5 m) per feed. The 3 mm and 3.5 mm boards are rated to 16 ft (5 m) from one end, and the other thin boards are sized for one 16 ft (5 m) reel per feed. Longer runs take a feed every 16 ft or a feed at both ends.
Can a thin LED strip be tunable white or RGB?
Yes. UT-T280-4-2110 is a 4 mm tunable white board, 2700K to 6500K. UT-R120-45-2835 is a 4.5 mm RGB board, and UT-R120-5 is a 5 mm RGB board.