# IR7: 4-Foot 4-Lamp T5HO Fluorescent Class 1 Division 2 Lighting | Maes Lighting

> Explore the IR7 T5HO fluorescent light for Class 1 Division 2 hazardous areas. Reliable, safe illumination from Maes Lighting.

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Technical article

# IR7

The IR7 Series 4-foot 4-lamp T5HO fluorescent light from [Maes Lighting](https://maeslighting.com/) is a high-performance fixture engineered for Class 1 Division 2 and Class 2 Division 2 hazardous locations, such as chemical storage, grain facilities, and bakeries. This high bay-style light ensures safety, reliability, and bright illumination in volatile environments where flammable gases or combustible dust are present.

## Understanding the IR7 Series T5HO Fluorescent Light

The IR7 Series is a dual-rated fixture for Class 1 Division 2 (flammable gases/vapors) and Class 2 Division 2 (combustible dust) environments, meeting UL844 and UL1598 standards. Its 4-lamp T5HO configuration delivers intense illumination, making it a trusted choice for hazardous industrial settings. This fixture adheres to [NFPA guidelines](https://www.nfpa.org) for safe operation in high-risk areas. [Source: [https://www.nfpa.org/](https://www.nfpa.org)]

### Key Specifications

- Dimensions: 51 inches long x 15 inches wide.
- Power: 216 watts, 20,000 lumens (4-lamp T5HO).
- Construction: 18-gauge steel with 3/16-inch tempered glass and zinc latches.
- Warranty: 5-year manufacturer warranty.

## Features of the IR7 4-Lamp T5HO Fixture

The IR7 combines rugged construction with high-quality illumination, making it ideal for hazardous environments.

### Heavy-Duty and Safe Design

Featuring a robust steel body and a tempered glass front access door, the IR7 ensures durability in harsh conditions. Its sealed design prevents sparks or heat from igniting flammable substances, meeting [OSHA standards](https://www.osha.gov) for workplace safety. [Source: [https://www.osha.gov/](https://www.osha.gov)]

### High-Performance T5HO Lamps

The 4-lamp T5HO setup produces 20,000 lumens of bright, uniform light, ideal for large spaces. T5HO lamps provide excellent color rendering, improving visibility for tasks, as highlighted by the [Illuminating Engineering Society](https://www.ies.org). [Source: [https://www.ies.org/](https://www.ies.org)]

### Flexible Installation Options

Designed for high bay applications, the IR7 supports surface or pendant mounting, fitting seamlessly into spaces like warehouses or coal storage facilities. Maes Lighting’s [accessories](https://maeslighting.com/products) make installation straightforward.

## Benefits of the IR7 T5HO Fluorescent Light

The IR7 delivers key advantages for safety, performance, and affordability in hazardous locations.

### Superior Safety in Hazardous Environments

Certified for Class 1 Division 2 and Class 2 Division 2, the IR7 minimizes ignition risks in areas with gases or dust, ensuring worker safety and compliance with [NFPA standards](https://www.nfpa.org). [Source: [https://www.nfpa.org/](https://www.nfpa.org)]

### Budget-Friendly Illumination

At $450, the fluorescent IR7 is more affordable than its LED counterpart ($690 for 160W, 20,000 lumens), making it a cost-effective option for facilities not yet upgrading to [industrial LEDs](https://maeslighting.com/post/high-lumen-led-commercial-industrial-lighting-supplier-guide). [Source: [https://www.energy.gov/](https://www.energy.gov/)]

### Dependable Performance

Backed by a 5-year warranty, the IR7 leverages proven T5HO technology to provide consistent illumination, perfect for settings where maintenance access is limited.

## Applications of the IR7 T5HO Fluorescent Light

The IR7 is adaptable, serving various hazardous and industrial environments.

### Chemical and Coal Storage Facilities

The IR7’s durable design and high lumen output ensure safe, reliable lighting in chemical warehouses or coal storage areas, complementing [explosion-proof lighting](https://maeslighting.com/post/explosion-proof-led-lighting-solutions).

### Bakeries and Grain Processing Plants

With Class 2 Division 2 certification, the IR7 is well-suited for dusty environments like bakeries or grain facilities, where combustible dust is a concern. It pairs effectively with [wet area LEDs](https://maeslighting.com/post/wet-area-lighting-business) for humid conditions.

### Industrial Warehouses and Manufacturing

As a high bay fixture, the IR7 provides bright illumination for large industrial spaces, improving visibility for tasks like inventory management or equipment operation.

## Fluorescent vs. LED IR7: A Comparison

The IR7 Series is available in both fluorescent and LED models. Here’s how they compare:

### Energy Efficiency

The fluorescent IR7 (216W, 20,000 lumens) uses more power than the LED version (160W, 20,000 lumens), which saves up to 70% on energy, according to the [U.S. Department of Energy](https://www.energy.gov). [Source: [https://www.energy.gov/](https://www.energy.gov)]

### Maintenance and Lifespan

Fluorescent T5HO lamps last 10,000–20,000 hours, requiring more frequent replacements than LEDs (50,000+ hours). However, fluorescent tubes are simpler to replace in existing setups.

### Initial Cost vs. Long-Term Savings

The fluorescent IR7 is $240 less than the LED model, offering a lower upfront cost for facilities prioritizing budget over long-term efficiency.

## Best Practices for IR7 Installation and Maintenance

To ensure safety and performance, follow these best practices:

### Certified Installation

Engage certified electricians to install the IR7 per Class 1 Division 2 standards. Maes Lighting’s [consultation services](https://maeslighting.com/contact-us) offer expert support for compliant installations.

### Routine Maintenance

Inspect the tempered glass and seals quarterly, replacing T5HO lamps every 1–2 years to maintain optimal brightness. Use [accessories](https://maeslighting.com/products) for compliant replacements.

### Explore LED Alternatives

For facilities aiming for energy efficiency, consider the LED IR7 model or other [explosion-proof lighting](https://maeslighting.com/post/explosion-proof-led-lighting-solutions) options for enhanced savings.

## How to Choose the Right IR7 Fixture

Selecting the best IR7 model depends on your specific requirements. Key tips include:

- Ensure Certification Match: Verify Class 1 Division 2 and Class 2 Division 2 ratings align with your facility’s hazards.
- Weigh Cost vs. Efficiency: Opt for fluorescent for lower initial costs or LED for long-term savings.
- Trust Reliable Suppliers: Maes Lighting provides quality [industrial LEDs](https://maeslighting.com/post/high-lumen-led-commercial-industrial-lighting-supplier-guide) with nationwide delivery.

## Conclusion

The IR7 4-foot 4-lamp T5HO fluorescent light offers a dependable, cost-effective solution for Class 1 Division 2 and Class 2 Division 2 hazardous locations, delivering bright, safe illumination. Perfect for chemical storage, bakeries, and industrial warehouses, it ensures compliance and performance. [Maes Lighting](https://maeslighting.com/) provides top-tier [explosion-proof lighting](https://maeslighting.com/post/explosion-proof-led-lighting-solutions) and [industrial LEDs](https://maeslighting.com/post/high-lumen-led-commercial-industrial-lighting-supplier-guide) to meet your needs. Light up your hazardous environment with the IR7 today.

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Common questions

## Frequently asked questions

These answers clarify the selection process without replacing project-specific documentation.

**What is the IR7 T5HO fixture rated for?**

Dual-rated for Class 1 Division 2 (flammable gases/vapors) and Class 2 Division 2 (combustible dust), meeting UL844 and UL1598 — suited to chemical storage, grain facilities and bakeries.

**What output does the 4-lamp T5HO produce?**

20,000 lumens of bright, uniform light from a robust steel body with a tempered glass access door, mounted surface or pendant for high bay duty.

**Fluorescent or LED IR7 — which to choose?**

The fluorescent version costs less upfront ($450 vs $690) but uses 216W against the LED's 160W for the same 20,000 lumens, and its lamps need replacing every 1 to 2 years versus 50,000+ hour LEDs.

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Maes Lighting — nationwide supplier of certified explosion proof, industrial, high-temperature,
food-processing, vapor-tight, high-bay, flood, area, and emergency LED lighting.
Headquarters: Broken Arrow, Oklahoma. Sales: (866) 860-6399 · tjacobs@maeslighting.com
Website: https://maeslighting.com