LINEAR TUFF Series
Luminaire Type
Overview
The Linear Tuff Series is a versatile linear LED fixture designed to withstand the most demanding industrial environments, available in durable 2-foot and 4-foot lengths with efficacy up to 150 lm/W. Its rugged, copper-free aluminum body handles temperatures from -40°F to 140°F along with vibration, water, and dust, and an optimized heat sink ensures safe, reliable heat dissipation, even in Class 1 Division 1 hazardous locations. Requiring no maintenance, it delivers over 147,000 hours of life and a new retrofit bracket for improved compatibility—ideal for petrochemical facilities, oil rigs, and mines.
Classifications, Ratings, Certifications
INFO
Robust Linear LED for Class I Division 1 Tough Environments
Petrochemical facilities, oil rigs, and mines demand a linear fixture rated for the most stringent Division 1 classification — the Linear Tuff Series is built to deliver zero-maintenance performance there.
The Linear Tuff Series is a versatile linear LED fixture designed to withstand the most demanding industrial environments. Available in durable 2-foot and 4-foot lengths, it offers high luminous efficacy of up to 150 lumens per watt along with a retrofit bracket for improved compatibility.
Built with a rugged, copper-free aluminum body and frame, the Linear Tuff can handle extreme temperatures from -40°F to +140°F along with vibration, water, and dust. Its optimized heat sink and thermal management ensure safe, reliable heat dissipation, even in hazardous locations classified as Class 1 Division 1.
Key Features
- Thermal Management: Safe and reliable heat transfer, offering a T-rating of T6 (CID1).
- Long Fixture Life: L70 >147,000 hours@140°F. Maintenance-free and safe operation.
- Rugged Construction: Heat sink designed to perform in high ambient temperatures up to +140°F and as low as -40°F. Built to withstand extreme temperatures, vibration, water, and dust.
Why Specify the Linear Tuff Series
- Certified for Class I Division 1 hazardous locations
- New retrofit bracket improves compatibility with existing installs
- 10-year LED / 7-year driver warranty
- DLC Standard qualified on select configurations
Specs
| Electrical Parameters | |
|---|---|
| L70 | 147,000 hrs@140°F |
| Warranty | LEDs: 10 years, Driver: 7 years |
| Power Factor | ≥0.90 |
| Supply Wire | 12-18AWG, Rated 90°C |
| Surge Protection | 10KV |
| THD | <20% |
| Voltage/Frequency | 100-277V AC, 347-480V AC 50/60Hz |
| Dimming | 0-10V, Range 10-100% |
| Power (W) | 30W | 40W | 60W | 80W |
| Rated Input Current @277V AC (A) | 0.12 | 0.16 | 0.24 | 0.32 |
| Rated Input Current @347V AC (A) | 0.096 | 0.128 | 0.192 | 0.256 |
| Rated Input Current @480V AC (A) | 0.069 | 0.092 | 0.138 | 0.185 |
| Rated Input Current @100V AC (A) | 0.277 | 0.37 | 0.555 | 0.74 |
| Optical Parameters | |
|---|---|
| Correlated Color Temperature (CCT) | 3000K/4000K/5000K |
| Color Rendering Index (CRI) | 80 CRI |
| Available Beam Angle | 60° / 110° / T2 |
| Lumen Efficacy* | 150Lm/W |
| Lumen Output (Lm)* | 4245 | 5592 | 8972 | 11875 |
| Mechanical Parameters | |
|---|---|
| Hardware | 316 Stainless Steel |
| Lens Material | Tempered Glass |
| Mounting Options | Pendant, Yoke, Chain, Pole |
| Product Weight | 16.3lbs/7.4kg | 23.8lbs/10.8kg |
| Housing Material | Copper-free (< 0.4%) aluminum |
| Package Weight | 18.4lbs/8.4kg | 25.9lbs/11.8kg |
| Cable Entry | (3) 3/4" NPT |
| Product Dimensions (L×W×H) | 21.4×4.3×7.3in (544×108×185mm) | 43.3×4.3×7.3in (1100×108×185mm) |
| Package Dimensions (L×W×H) | 23.6×6.3×10.3in (600×160×260mm) | 45.7×6.7×9.9in (1160×170×250mm) |
| Environmental Parameters | |
|---|---|
| Ambient Operating Temperature | -40°F ~ 140°F (-40°C ~ 60°C) |
| EPA Wind Rating (FT2) | 1.62 (Yoke) | 2.388 (Yoke) |
| T-Code Rating | C1D1 - T6, C1D2 - T4A |
* Value calculated based on 5000K, 80 CRI and Clear PC; varies to different spec. 70 CRI & 90 CRI optional, DLC available with 80 CRI only.
Compliance
| Classifications |
|---|
| Class I Zone 1, Group IIB |
| Class I Division 1, Groups C, D |
| Class I Division 2, Groups A, B, C, D |
| Certifications |
|---|
| CSA C22.2 No. 137 |
| CSA C22.2 No. 250.0 |
| DLC Standard (See Notes) |
| FCC Part 15, Subpart B |
| UL 1598 |
| UL 1598 Wet Locations |
| UL 1598A |
| UL 1598A Marine Outside Type (Salt Water) |
| UL 844 |
| Ratings |
|---|
| IK08 |
| IP66 |
| Salt Spray 720 hrs (ASTM B117) |
* Not all product variations listed are DLC qualified. Visit www.designlights.org/search to confirm qualification.
Downloads
Spec Sheets
| Document Type | Description | Updated | Download |
|---|---|---|---|
| Specification | LINEAR TUFF Series – Full Specification Sheet | 7/21/2026 |
IES
| Document Type | Description | Updated | Download |
|---|---|---|---|
| IES | LINEAR TUFF Series – IES Photometric Data Files | 7/21/2026 |
Certificates
| Document Type | Description | Updated | Download |
|---|---|---|---|
| Certificates | LINEAR TUFF Series – UL1598 Non Hazardous Certificate of Compliance | 7/21/2026 | |
| Certificates | LINEAR TUFF Series – UL1598A Marine Certificate of Compliance | 7/21/2026 | |
| Certificates | LINEAR TUFF Series – UL844 Hazardous Certificate of Compliance | 7/21/2026 |
Marketing Materials
| Document Type | Description | Updated | Download |
|---|---|---|---|
| Brochure | Brochure - ATEX, IECEx, UKEX Certified Products | 7/21/2026 | |
| Brochure | Brochure - Built for Harsh Environments | 7/21/2026 | |
| Brochure | Brochure - Hazloc - UL Certified Products | 7/21/2026 | |
| Brochure | Brochure - Quick Selection Guide | 7/21/2026 | |
| Brand Kit | Red Sky Lighting Brand Guidelines and Logos | 7/21/2026 |