What is a top bending LED neon flex?

A top bend neon strip flexes up and down, perpendicular to the emitting face, so it can crest over an edge, follow a dome or climb a vertical stroke while the light window keeps facing the viewer. It is the most common neon body type and covers cove lighting, step nosing, signage letters and handrails.

Which top bend neon size should I specify?

Cross-sections run 5×11 mm, 10×10 mm, 12×12 mm, 16×16 mm, 20×18 mm, 20×20 mm and 25×25 mm. Small sections suit letters and slim reveals; 16×16 mm and above give the deep, saturated neon line specified for façade and feature work. Match the emitting window to the visible aperture of the channel and keep the LED pitch at 120 LEDs/m or denser for a dot-free result.

What bend radius does vertical bending neon flex hold?

Typical top bend bodies hold R30–R50 mm; taller sections such as 25×25 mm need R100 mm or more. Bending tighter than the rating stretches the outer silicone wall, which shows as a pale band and, over time, as a stress line at the FPCB solder pads.

Is top bend neon flex suitable for letters and logos?

Yes — vertical strokes, dome tops and the crests of script letters are exactly what a top bend body is for. Fabricators normally combine top bend for the strokes with side bend for the horizontal curves, or use a mini top bend body throughout on letters under 100 mm deep.

Does a dome top LED neon strip look different from a flat top?

A dome top scatters light over a wider angle and hides the LED line better at close viewing distance, which is why it is preferred for exposed runs and lettering. A flat top concentrates output forward and reads sharper inside a channel or under a coving lip.

Can a top bend neon strip be used outdoors?

Yes, with an IP67 injection-moulded silicone body and sealed end caps. Outdoor top bend runs are standard on cornices, parapets, canopy edges and stair nosings; specify UV-stabilised silicone and a 105 μm copper FPCB so the run survives sun load and winter cycling without colour shift.

2525 Flexible Linear Neon light (#1942)

24V · 144LEDs · 41.66mm/cut · 25x25mm

Model: 1942

Overview

The DENO LED 1942 is a revolutionary flexible linear neon light, offering true 3D bending capabilities unlike traditional neon strips. Featuring 144 LEDs per meter and a 24V input, it's designed for complex installations that demand extreme flexibility and durability. Its robust IP67 silicone exterior ensures resistance to wear and tear, making it ideal for challenging environments. Key applications include tunnel lighting, tram and subway contour lighting, and other demand...

Description

True 3D flexible linear neon light design enables simultaneous top bending, side bending, and axial twisting for complex architectural lighting installations. Built with high-density 2835 LEDs on a durable 12mm 3oz copper PCB, delivering uniform 120-degree illumination at 24V DC. Features a heavy-duty silicone encapsulation with an IP67 rating, offering superior wear resistance for demanding subway tunnel and platform lighting. Engineered for precise field sizing with 41.66mm cutting increments and supports continuous single-feed runs up to 5 meters. Available for wholesale project supply with OEM custom lengths and tailored dimming configurations to meet strict engineering specifications.

Specifications

LED QTY	144
PART NO	DL-NF28C72V24-1942-*
SMD TYPE	2835
CUTTABLE UNIT	6LEDs/41.66mm
DIMMABLE	Yes
IP RATING	IP67
LED PITCH	3.78mm
LIFESPAN	30000
PCB WIDTH	12mm
WARRANTY	5 Years
BEAM ANGLE	120°
RUN LENGTH	5m
COPPER FOIL	3oz
POWER RANGE	2.8~28.8W
CIRCUIT TYPE	C.V.
INPUT VOLTAGE	DC 24V
LUMINOUS FLUX	1297 lm/m @4000K
OPERATING TEMPERATURE	-25~40°C;Tc：75°C（max）

Applications

Channel letters & logo signage — Silicone neon holds a continuous glow line for logos, channel letters and wayfinding without visible LED dots.
Facade & perimeter outlining — Flexible neon bends around building edges, balconies and columns to trace architecture at night.
Bar fronts, headboards & stair nosings — Used along stair nosings, headboards and bar fronts where a soft, uniform tube of light is wanted instead of a hard strip.
Facade, landscape & bathroom runs (IP67) — IP67 sealing suits facades, landscape lighting, bathrooms and other locations exposed to rain, splashing or wash-down cleaning.

Request a quotation for #1942

DENO LED is a Shenzhen-based LED strip manufacturer with its own Foshan production base. Send the run length, voltage, CCT/CRI and IP rating you need and our engineering team replies with a specification sheet, wiring plan and price — OEM/ODM and fully custom builds included.

Warranty: 5 years
Lead time: standard boards: samples from 1 working day · custom: 3–5 working days · new FPCB: 1–3 weeks · production 1–2 weeks after sample approval
Compliance: CE · UL · RoHS
Bonding wire: 99.99% pure gold
Copper foil: 99.9% pure copper FPCB

Contact DENO LED engineers · OEM / ODM capability

Photometric Performance — CCT × CRI Efficacy Matrix

Peak measured luminous efficacy: 82.4 lm/W at 4000K, Ra 80, ErP energy class G (Grade DN (1st Tier) · 10W/m).

All values are measured at the stated power density and ambient 25 °C, reported as luminous efficacy in lumens per watt (lm/W), luminous flux per metre (lm/m) and the corresponding EU ErP (2019/2015) energy class.

Grade DL (2nd Tier) · 10W/m

Grade DL (2nd Tier) · 10W/m — measured at 10 W/m: luminous efficacy (lm/W), luminous flux (lm/m) and ErP energy class per CCT and CRI grade.
CCT (K)	Ra 80 — Luminous Efficacy (lm/W)	Ra 80 — Luminous Flux (lm/m)	Ra 80 — ErP Energy Class	Ra 90 — Luminous Efficacy (lm/W)	Ra 90 — Luminous Flux (lm/m)	Ra 90 — ErP Energy Class	Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W)	Full Spectrum (Ra 95+) — Luminous Flux (lm/m)	Full Spectrum (Ra 95+) — ErP Energy Class
1800 K	49 lm/W	490.1 lm/m	G	38.5 lm/W	385.1 lm/m	G	—	—	—
2300 K	54.5 lm/W	544.9 lm/m	G	42.9 lm/W	428.9 lm/m	G	34.9 lm/W	348.7 lm/m	G
2700 K	55.8 lm/W	558 lm/m	G	46.4 lm/W	463.9 lm/m	G	37.6 lm/W	376.4 lm/m	G
3000 K	61.3 lm/W	612.7 lm/m	G	48.9 lm/W	489.1 lm/m	G	39.7 lm/W	397.2 lm/m	G
3500 K	62.4 lm/W	623.6 lm/m	G	49.8 lm/W	497.8 lm/m	G	40.9 lm/W	409.2 lm/m	G
4000 K	64.3 lm/W	643.3 lm/m	G	51 lm/W	509.8 lm/m	G	42 lm/W	420.1 lm/m	G
5000 K	64.3 lm/W	643.3 lm/m	G	50.9 lm/W	508.7 lm/m	G	41.6 lm/W	415.9 lm/m	G
6500 K	58.1 lm/W	581 lm/m	G	48.8 lm/W	488 lm/m	G	40.3 lm/W	403.3 lm/m	G

Grade DL (2nd Tier) · 18W/m

Grade DL (2nd Tier) · 18W/m — measured at 18 W/m: luminous efficacy (lm/W), luminous flux (lm/m) and ErP energy class per CCT and CRI grade.
CCT (K)	Ra 80 — Luminous Efficacy (lm/W)	Ra 80 — Luminous Flux (lm/m)	Ra 80 — ErP Energy Class	Ra 90 — Luminous Efficacy (lm/W)	Ra 90 — Luminous Flux (lm/m)	Ra 90 — ErP Energy Class	Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W)	Full Spectrum (Ra 95+) — Luminous Flux (lm/m)	Full Spectrum (Ra 95+) — ErP Energy Class
1800 K	46.3 lm/W	834.1 lm/m	G	36.4 lm/W	655.3 lm/m	G	—	—	—
2300 K	51.5 lm/W	927.1 lm/m	G	40.5 lm/W	729.8 lm/m	G	33 lm/W	593.4 lm/m	G
2700 K	52.7 lm/W	949.5 lm/m	G	43.9 lm/W	789.4 lm/m	G	35.6 lm/W	640.4 lm/m	G
3000 K	57.9 lm/W	1042.6 lm/m	G	46.2 lm/W	832.2 lm/m	G	37.5 lm/W	675.8 lm/m	G
3500 K	59 lm/W	1061.2 lm/m	G	47.1 lm/W	847.1 lm/m	G	38.7 lm/W	696.3 lm/m	G
4000 K	60.8 lm/W	1094.7 lm/m	G	48.2 lm/W	867.6 lm/m	G	39.7 lm/W	714.9 lm/m	G
5000 K	60.8 lm/W	1094.7 lm/m	G	48.1 lm/W	865.7 lm/m	G	39.3 lm/W	707.8 lm/m	G
6500 K	54.9 lm/W	988.6 lm/m	G	46.1 lm/W	830.3 lm/m	G	38.1 lm/W	686.3 lm/m	G

Grade DL (2nd Tier) · 22W/m

Grade DL (2nd Tier) · 22W/m — measured at 22 W/m: luminous efficacy (lm/W), luminous flux (lm/m) and ErP energy class per CCT and CRI grade.
CCT (K)	Ra 80 — Luminous Efficacy (lm/W)	Ra 80 — Luminous Flux (lm/m)	Ra 80 — ErP Energy Class	Ra 90 — Luminous Efficacy (lm/W)	Ra 90 — Luminous Flux (lm/m)	Ra 90 — ErP Energy Class	Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W)	Full Spectrum (Ra 95+) — Luminous Flux (lm/m)	Full Spectrum (Ra 95+) — ErP Energy Class
1800 K	45.1 lm/W	991.2 lm/m	G	35.4 lm/W	778.8 lm/m	G	—	—	—
2300 K	50.1 lm/W	1101.8 lm/m	G	39.4 lm/W	867.3 lm/m	G	32.1 lm/W	705.1 lm/m	G
2700 K	51.3 lm/W	1128.3 lm/m	G	42.6 lm/W	938.1 lm/m	G	34.6 lm/W	761.1 lm/m	G
3000 K	56.3 lm/W	1238.9 lm/m	G	45 lm/W	988.9 lm/m	G	36.5 lm/W	803.1 lm/m	G
3500 K	57.3 lm/W	1261.1 lm/m	G	45.8 lm/W	1006.6 lm/m	G	37.6 lm/W	827.4 lm/m	G
4000 K	59.1 lm/W	1300.9 lm/m	G	46.9 lm/W	1031 lm/m	G	38.6 lm/W	849.6 lm/m	G
5000 K	59.1 lm/W	1300.9 lm/m	G	46.8 lm/W	1028.8 lm/m	G	38.2 lm/W	841.1 lm/m	G
6500 K	53.4 lm/W	1174.8 lm/m	G	44.9 lm/W	986.7 lm/m	G	37.1 lm/W	815.6 lm/m	G

Grade DN (1st Tier) · 10W/m

Grade DN (1st Tier) · 10W/m — measured at 10 W/m: luminous efficacy (lm/W), luminous flux (lm/m) and ErP energy class per CCT and CRI grade.
CCT (K)	Ra 80 — Luminous Efficacy (lm/W)	Ra 80 — Luminous Flux (lm/m)	Ra 80 — ErP Energy Class	Ra 90 — Luminous Efficacy (lm/W)	Ra 90 — Luminous Flux (lm/m)	Ra 90 — ErP Energy Class	Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W)	Full Spectrum (Ra 95+) — Luminous Flux (lm/m)	Full Spectrum (Ra 95+) — ErP Energy Class
1800 K	64.6 lm/W	645.5 lm/m	G	53.7 lm/W	537.2 lm/m	G	—	—	—
2300 K	70.3 lm/W	703.5 lm/m	G	60 lm/W	599.6 lm/m	G	48.3 lm/W	483.1 lm/m	G
2700 K	75.9 lm/W	759.3 lm/m	G	64.8 lm/W	647.7 lm/m	G	52.5 lm/W	525.2 lm/m	G
3000 K	79.6 lm/W	796.5 lm/m	G	68.6 lm/W	686 lm/m	G	55.8 lm/W	558 lm/m	G
3500 K	80.9 lm/W	808.5 lm/m	G	70.1 lm/W	701.3 lm/m	G	57.7 lm/W	576.6 lm/m	G
4000 K	82.4 lm/W	823.8 lm/m	G	70.5 lm/W	704.6 lm/m	G	58.2 lm/W	582.1 lm/m	G
5000 K	82.3 lm/W	822.7 lm/m	G	71 lm/W	710.1 lm/m	G	57.6 lm/W	576.2 lm/m	G
6500 K	78.9 lm/W	788.8 lm/m	G	67.8 lm/W	678.3 lm/m	G	55.9 lm/W	558.8 lm/m	G

Grade DN (1st Tier) · 18W/m

Grade DN (1st Tier) · 18W/m — measured at 18 W/m: luminous efficacy (lm/W), luminous flux (lm/m) and ErP energy class per CCT and CRI grade.
CCT (K)	Ra 80 — Luminous Efficacy (lm/W)	Ra 80 — Luminous Flux (lm/m)	Ra 80 — ErP Energy Class	Ra 90 — Luminous Efficacy (lm/W)	Ra 90 — Luminous Flux (lm/m)	Ra 90 — ErP Energy Class	Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W)	Full Spectrum (Ra 95+) — Luminous Flux (lm/m)	Full Spectrum (Ra 95+) — ErP Energy Class
1800 K	61 lm/W	1098.4 lm/m	G	50.8 lm/W	914.1 lm/m	G	—	—	—
2300 K	66.5 lm/W	1197.1 lm/m	G	56.7 lm/W	1020.2 lm/m	G	45.7 lm/W	822.1 lm/m	G
2700 K	71.8 lm/W	1292 lm/m	G	61.2 lm/W	1102.1 lm/m	G	49.6 lm/W	893.6 lm/m	G
3000 K	75.3 lm/W	1355.3 lm/m	G	64.9 lm/W	1167.3 lm/m	G	52.7 lm/W	949.5 lm/m	G
3500 K	76.4 lm/W	1375.8 lm/m	G	66.3 lm/W	1193.4 lm/m	G	54.5 lm/W	981.1 lm/m	G
4000 K	77.9 lm/W	1401.9 lm/m	G	66.6 lm/W	1199 lm/m	G	55 lm/W	990.4 lm/m	G
5000 K	77.8 lm/W	1400 lm/m	G	67.1 lm/W	1208.3 lm/m	G	54.5 lm/W	980.5 lm/m	G
6500 K	74.6 lm/W	1342.3 lm/m	G	64.1 lm/W	1154.3 lm/m	G	52.8 lm/W	950.8 lm/m	G

Grade DN (1st Tier) · 22W/m

Grade DN (1st Tier) · 22W/m — measured at 22 W/m: luminous efficacy (lm/W), luminous flux (lm/m) and ErP energy class per CCT and CRI grade.
CCT (K)	Ra 80 — Luminous Efficacy (lm/W)	Ra 80 — Luminous Flux (lm/m)	Ra 80 — ErP Energy Class	Ra 90 — Luminous Efficacy (lm/W)	Ra 90 — Luminous Flux (lm/m)	Ra 90 — ErP Energy Class	Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W)	Full Spectrum (Ra 95+) — Luminous Flux (lm/m)	Full Spectrum (Ra 95+) — ErP Energy Class
1800 K	59.3 lm/W	1305.3 lm/m	G	49.4 lm/W	1086.3 lm/m	G	—	—	—
2300 K	64.7 lm/W	1422.6 lm/m	G	55.1 lm/W	1212.4 lm/m	G	44.4 lm/W	976.9 lm/m	G
2700 K	69.8 lm/W	1535.4 lm/m	G	59.5 lm/W	1309.7 lm/m	G	48.3 lm/W	1062 lm/m	G
3000 K	73.2 lm/W	1610.6 lm/m	G	63.1 lm/W	1387.2 lm/m	G	51.3 lm/W	1128.3 lm/m	G
3500 K	74.3 lm/W	1635 lm/m	G	64.5 lm/W	1418.1 lm/m	G	53 lm/W	1165.9 lm/m	G
4000 K	75.7 lm/W	1665.9 lm/m	G	64.8 lm/W	1424.8 lm/m	G	53.5 lm/W	1177 lm/m	G
5000 K	75.6 lm/W	1663.7 lm/m	G	65.3 lm/W	1435.8 lm/m	G	53 lm/W	1165.2 lm/m	G
6500 K	72.5 lm/W	1595.1 lm/m	G	62.3 lm/W	1371.7 lm/m	G	51.4 lm/W	1129.9 lm/m	G

Grade KE (3rd Tier) · 10W/m

Grade KE (3rd Tier) · 10W/m — measured at 10 W/m: luminous efficacy (lm/W), luminous flux (lm/m) and ErP energy class per CCT and CRI grade.
CCT (K)	Ra 80 — Luminous Efficacy (lm/W)	Ra 80 — Luminous Flux (lm/m)	Ra 80 — ErP Energy Class	Ra 90 — Luminous Efficacy (lm/W)	Ra 90 — Luminous Flux (lm/m)	Ra 90 — ErP Energy Class	Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W)	Full Spectrum (Ra 95+) — Luminous Flux (lm/m)	Full Spectrum (Ra 95+) — ErP Energy Class
1900 K	27.5 lm/W	274.6 lm/m	G	21 lm/W	210.1 lm/m	G	—	—	—
2300 K	30.5 lm/W	305.2 lm/m	G	23.4 lm/W	234.1 lm/m	G	19.3 lm/W	193.4 lm/m	G
2700 K	32.9 lm/W	329.3 lm/m	G	25.4 lm/W	253.8 lm/m	G	20.6 lm/W	205.7 lm/m	G
3000 K	34.6 lm/W	345.7 lm/m	G	27 lm/W	270.2 lm/m	G	22 lm/W	219.9 lm/m	G
3500 K	35.1 lm/W	351.2 lm/m	G	27.6 lm/W	275.7 lm/m	G	22.6 lm/W	226.5 lm/m	G
4000 K	36.1 lm/W	361 lm/m	G	28.2 lm/W	282.3 lm/m	G	23.3 lm/W	233 lm/m	G
5000 K	36.1 lm/W	361 lm/m	G	28.2 lm/W	282.3 lm/m	G	23.1 lm/W	230.7 lm/m	G
6500 K	34.6 lm/W	345.7 lm/m	G	27 lm/W	270.2 lm/m	G	22.4 lm/W	223.7 lm/m	G

Grade KE (3rd Tier) · 18W/m

Grade KE (3rd Tier) · 18W/m — measured at 18 W/m: luminous efficacy (lm/W), luminous flux (lm/m) and ErP energy class per CCT and CRI grade.
CCT (K)	Ra 80 — Luminous Efficacy (lm/W)	Ra 80 — Luminous Flux (lm/m)	Ra 80 — ErP Energy Class	Ra 90 — Luminous Efficacy (lm/W)	Ra 90 — Luminous Flux (lm/m)	Ra 90 — ErP Energy Class	Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W)	Full Spectrum (Ra 95+) — Luminous Flux (lm/m)	Full Spectrum (Ra 95+) — ErP Energy Class
1900 K	26 lm/W	467.3 lm/m	G	19.9 lm/W	357.5 lm/m	G	—	—	—
2300 K	28.9 lm/W	519.4 lm/m	G	22.1 lm/W	398.4 lm/m	G	18.3 lm/W	329.1 lm/m	G
2700 K	31.1 lm/W	560.4 lm/m	G	24 lm/W	431.9 lm/m	G	19.4 lm/W	350 lm/m	G
3000 K	32.7 lm/W	588.3 lm/m	G	25.5 lm/W	459.8 lm/m	G	20.8 lm/W	374.2 lm/m	G
3500 K	33.2 lm/W	597.6 lm/m	G	26.1 lm/W	469.2 lm/m	G	21.4 lm/W	385.4 lm/m	G
4000 K	34.1 lm/W	614.4 lm/m	G	26.7 lm/W	480.3 lm/m	G	22 lm/W	396.5 lm/m	G
5000 K	34.1 lm/W	614.4 lm/m	G	26.7 lm/W	480.3 lm/m	G	21.8 lm/W	392.6 lm/m	G
6500 K	32.7 lm/W	588.3 lm/m	G	25.5 lm/W	459.8 lm/m	G	21.1 lm/W	380.7 lm/m	G

Grade KE (3rd Tier) · 22W/m

Grade KE (3rd Tier) · 22W/m — measured at 22 W/m: luminous efficacy (lm/W), luminous flux (lm/m) and ErP energy class per CCT and CRI grade.
CCT (K)	Ra 80 — Luminous Efficacy (lm/W)	Ra 80 — Luminous Flux (lm/m)	Ra 80 — ErP Energy Class	Ra 90 — Luminous Efficacy (lm/W)	Ra 90 — Luminous Flux (lm/m)	Ra 90 — ErP Energy Class	Full Spectrum (Ra 95+) — Luminous Efficacy (lm/W)	Full Spectrum (Ra 95+) — Luminous Flux (lm/m)	Full Spectrum (Ra 95+) — ErP Energy Class
1900 K	25.2 lm/W	555.3 lm/m	G	19.3 lm/W	424.8 lm/m	G	—	—	—
2300 K	28.1 lm/W	617.3 lm/m	G	21.5 lm/W	473.5 lm/m	G	17.8 lm/W	391.1 lm/m	G
2700 K	30.3 lm/W	665.9 lm/m	G	23.3 lm/W	513.3 lm/m	G	18.9 lm/W	415.9 lm/m	G
3000 K	31.8 lm/W	699.1 lm/m	G	24.8 lm/W	546.5 lm/m	G	20.2 lm/W	444.7 lm/m	G
3500 K	32.3 lm/W	710.2 lm/m	G	25.3 lm/W	557.5 lm/m	G	20.8 lm/W	458 lm/m	G
4000 K	33.2 lm/W	730.1 lm/m	G	25.9 lm/W	570.8 lm/m	G	21.4 lm/W	471.2 lm/m	G
5000 K	33.2 lm/W	730.1 lm/m	G	25.9 lm/W	570.8 lm/m	G	21.2 lm/W	466.5 lm/m	G
6500 K	31.8 lm/W	699.1 lm/m	G	24.8 lm/W	546.5 lm/m	G	20.6 lm/W	452.4 lm/m	G

Related models in this series

See every model in Neon LED Strip Series or narrow to Top Bend. Compare wattage, lumen output and run length in the ProCalc parameter library, or request OEM/ODM pricing on the custom manufacturing page.

Frequently Asked Questions

What makes the 1942 Flexible Linear Neon Light different from standard LED strips?

The 1942 offers true 3D bending, allowing simultaneous positive, side bending, and twisting with an ultra-small bending angle, perfect for complex designs.

What is the maximum continuous length for single power feed connection?

This flexible linear neon light supports a maximum continuous length of up to 3 meters, ensuring high power and brightness continuity.

What are the common applications for the DENO LED 1942 neon light?

It's ideal for special scenarios like tunnel lighting, tram contour lighting, and subway tunnel/platform lighting due to its durability and flexibility.

What are the key specifications of #1942?

2525 Flexible Linear Neon light | 25x25mm | 24V | 144LEDs | 41.66mm/cut | #1942: 2835 LEDs, 144, DC 24V, 12mm FPCB, 3oz copper foil, 2.8~28.8W power, cut unit 6LEDs/41.66mm. Photometric files, wiring diagrams and test reports are available in the downloads block on this page.

Which LED driver and run length suit #1942?

2525 Flexible Linear Neon light | 25x25mm | 24V | 144LEDs | 41.66mm/cut | #1942 is a constant-voltage DC 24V product, so pair it with a CE or UL listed DC 24V constant-voltage LED driver rated about 20% above the connected load. Maximum single run is 5m. 5m Single / 10m Dual Input power. Feeding from both ends or mid-feeding halves the copper distance and roughly quarters the voltage drop.

Engineering & selection guide

Bending limits, IP selection, voltage drop, cutting and the full buyer Q&A for this family are kept on the series page.

LED neon flex selection guide — bend direction and radius, IP rating for facade, pool and wet areas, cutting and feed planning
LED strip engineering selection handbook