18W LED Tube Manufacturer — 6 Variants, DLC QPL, UL, ETL
The most specified commercial LED tube wattage. Cornea Lighting's 18W T8 covers 6 variants: 3000K/4000K/5000K CCT, CRI 80/90, IP20/IP65 — all DLC QPL listed or UL certified.
📋 Quick Answer
An 18W T8 LED tube is the most common commercial LED tube wattage, available in 4ft (1200mm) length with G13 bi-pin base. Cornea Lighting manufactures 18W T8 LED tubes in 6 variants: 4000K/CRI80 Type B (2,300lm), 5000K/CRI80 Type B (2,350lm), 4000K/CRI80 Type A+B (2,250lm), 4000K/CRI90 Type B (2,100lm), 3000K/CRI80 Type B (2,200lm), and 5000K/IP65 Type B (2,200lm). All variants are DLC QPL listed or UL certified, with 5-year warranty.
Available 18W — 6 Variants Models
| SKU | Type | Length | Wattage | Lumens | CCT | CRI | Install Type | IP | Dimmable | Certifications |
|---|---|---|---|---|---|---|---|---|---|---|
| CL-T8-4F-18W-40-B | T8 | 4ft | 18W | 2,300lm | 4000K | CRI 80 | Type B | IP20 | ✅ 0-10V | ULETLDLCCERoHSEnergy Star |
| CL-T8-4F-18W-50-B | T8 | 4ft | 18W | 2,350lm | 5000K | CRI 80 | Type B | IP20 | ✅ 0-10V | ULETLDLCCERoHSEnergy Star |
| CL-T8-4F-18W-40-AB | T8 | 4ft | 18W | 2,250lm | 4000K | CRI 80 | Type A+B | IP20 | — | ULDLCCERoHS |
| CL-T8-4F-18W-40-B-90 | T8 | 4ft | 18W | 2,100lm | 4000K | CRI 90 | Type B | IP20 | ✅ 0-10V | ULDLCCERoHS |
| CL-T8-4F-18W-30-B | T8 | 4ft | 18W | 2,200lm | 3000K | CRI 80 | Type B | IP20 | ✅ 0-10V | ULDLCCERoHS |
| CL-T8-4F-18W-50-B-IP65 | T8 | 4ft | 18W | 2,200lm | 5000K | CRI 80 | Type B | IP65 | — | ULCERoHS |
*Annual energy cost calculated at $0.10/kWh, 10 hrs/day, 365 days/year.
Why Choose 18W — 6 Variants?
Most Specified Wattage
18W is the global standard for commercial T8 LED retrofit — the optimal balance of energy savings (44% vs 32W fluorescent) and light output (2,300lm) for offices, warehouses, and retail.
6 Variants for Every Application
3000K for hospitality, 4000K for offices, 5000K for warehouses, CRI 90 for retail/healthcare, IP65 for wet locations — one wattage covers all commercial needs.
DLC + Energy Star Rebates
Multiple variants carry DLC QPL and Energy Star certification — qualifying for the widest range of utility rebate programs across North America.
Type A, B, and A+B
All three installation types available at 18W — choose based on project requirements: plug-and-play, direct-wire, or dual-mode.
Typical Applications
18W — 6 Variants LED vs Fluorescent: Side-by-Side Comparison
| Specification | Fluorescent | Cornea LED (18W — 6 Variants) |
|---|---|---|
| Wattage | 32W (F32T8) | 18W |
| Lumens (peak) | 2,850lm | 2,350lm (5000K) |
| Efficacy | 89 lm/W | 128–131 lm/W |
| Lifespan | 20,000 hrs | 50,000 hrs |
| Mercury | 3.5mg | None |
| Annual Energy Cost* | $14.02/yr | $7.88/yr |
Certifications & Compliance
DLC QPL
Multiple 18W variants on DLC QPL — qualifies for US/Canada utility rebates ($5–$25/tube).
UL / ETL Listed
Both UL and ETL certifications available across 18W variants.
Energy Star
18W 4000K and 5000K Type B variants carry Energy Star certification.
CRI 90+ Available
18W 4000K CRI 90 variant for retail display and healthcare — DLC QPL listed.
Frequently Asked Questions
QWhat is an 18W T8 LED tube?
An 18W T8 LED tube is the most common commercial LED tube, replacing the 32W F32T8 fluorescent tube with 44% energy savings. Cornea Lighting offers 6 variants at 18W: different CCTs (3000K/4000K/5000K), CRI levels (80/90), installation types (Type A+B, Type B), and IP ratings (IP20/IP65). All are DLC QPL listed or UL/ETL certified.
QWhich 18W variant is best for office lighting?
For office lighting, the 18W 4000K CRI80 Type B (CL-T8-4F-18W-40-B) is the most specified — delivering 2,300 lumens at 128 lm/W with DLC QPL, UL, ETL, and Energy Star certification. For offices with color-critical tasks, the 18W 4000K CRI90 variant (CL-T8-4F-18W-40-B-90) is recommended.
QWhich 18W variant is best for warehouses?
For warehouses, the 18W 5000K Type B (CL-T8-4F-18W-50-B) is preferred — 5000K daylight maximizes visual acuity in high-ceiling environments. It delivers 2,350 lumens at 131 lm/W with DLC QPL, UL, ETL, and Energy Star certification.
QIs there a waterproof 18W T8 LED tube?
Yes. The 18W 5000K IP65 Type B (CL-T8-4F-18W-50-B-IP65) is rated IP65 — fully dust-tight and protected against water jets. Suitable for food processing, car washes, outdoor covered areas, and wet industrial environments.
QWhat is the CRI 90 18W LED tube used for?
The 18W 4000K CRI 90 variant (CL-T8-4F-18W-40-B-90) is designed for retail display, healthcare, and food service applications where accurate color rendering is critical. CRI 90 makes merchandise colors appear more natural and vibrant, improving customer perception and sales.
Related Product Specifications
Ready to Source 18W — 6 Variants LED Tubes?
Factory-direct from Zhongshan, China. MOQ 100 pcs. OEM & private label available. DLC QPL, UL, ETL, CE certified. 5-year warranty.
📧 [email protected] · 📍 Zhongshan, Guangdong, China