Description
Grainger MSA Ultra-Twin – Reusable Respirator Industrial Full Face Adjustable Head Strap Large Black – 4LR28
Use for welding, asbestos abatement, grinding, sanding, painting
Specifications
| Stock Number | 961450 |
|---|---|
| Manufacturer # | 4LR28 |
| Brand | MSA Ultra-Twin |
| Manufacturer | Grainger |
| Country of Origin | Unknown |
| Application | Reusable Respirator |
| Color | Black |
| Fastening Type | Adjustable Head Strap |
| Material | Silicone / Rubber |
| Size | Large |
| Style | Full Face |
| Type | Industrial |
| UNSPSC Code | 46182005 |
| User | Adult |
What Our Experts Think
- Inspect Before and After Use: Check the facepiece, straps, valves, and lens for cracks, tears, or other damage. Ensure all components are securely in place and the seal is intact.
- Clean Thoroughly: Wash with warm water and mild soap after each use. Rinse completely and let it air dry in a shaded area — avoid direct sunlight or heat sources.
- Check Filters/Cartridges: Ensure filters are properly connected, undamaged, and within their expiration date. Replace as needed for continued protection.
- Seal Test: Perform a positive and negative pressure test before use to confirm an airtight fit. Adjust the head straps if necessary.
- Store Properly: Store the respirator in a clean, dry, and cool space. Avoid folding the mask or stretching the straps to preserve its shape and fit.
Q&A
Q: Who is it designed for?
A: Ideal for industrial workers, chemical handlers, emergency responders, and anyone who needs reliable, heavy-duty respiratory protection in hazardous environments.
Q: Where can it be used?
A: Suitable for industrial sites, chemical plants, manufacturing environments, and construction zones with airborne contaminants.
Q: What makes it unique?
A: The large size offers a better fit for bigger facial structures, while the clear, wide lens ensures an unobstructed field of vision. It combines long-term comfort with heavy-duty protection.
Q: Does it come with filters?
A: No — filters and cartridges are sold separately, allowing you to choose the right type of protection (e.g., chemical, particulate, or multi-gas).
Q: Is it NIOSH-approved?
A: Yes — it meets NIOSH safety standards for industrial respiratory protection.
Maintenance Tips
- Full Face Coverage: Protects eyes, nose, and mouth from harmful airborne particles, chemicals, and fumes — essential for hazardous work environments.
- Adjustable Head Straps: Designed for a secure, customizable fit, ensuring stability and comfort during long hours of use.
- Durable and Reusable: Built with rugged, high-quality materials to withstand tough industrial conditions while maintaining performance over time.
- Wide, Clear Vision: Equipped with a large, scratch-resistant lens for an unobstructed field of view, crucial for maintaining awareness on the job.
- NIOSH Approved: Certified for safety and reliability under National Institute for Occupational Safety and Health (NIOSH) standards.






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