The RPB 15-821 Z4 Side Window Blockers are solid gray inserts designed to cover the side windows on the Z4 respiratory helmet. These blockers solve the critical problem of visual distraction or unwanted ambient light entering the helmet, which is essential for tasks requiring high focus, such as detailed finishing or welding. Installing this pair of side window blockers allows the operator to maintain focus solely on the work area directly in front of them, improving both concentration and safety.
- Increases efficiency by eliminating distracting peripheral light and movement, allowing operators to maintain high focus on detailed work.
- Promotes jobsite safety by ensuring the user’s attention is fixed on the primary work zone, reducing the risk of being startled by side hazards.
- Guaranteed compatibility and easy installation, as this pair is precisely designed to fit and integrate seamlessly with the RPB Z4 respiratory helmet.
These side window blockers are best suited for operators, inspectors, and maintenance teams in industries like industrial painting, welding, or precision finishing where minimizing visual distraction is critical for high-quality work and operator safety.
About IndustrialSafety.comIndustrialSafety.com is a trusted national distributor of PPE, safety equipment, and industrial supplies for businesses, contractors, and municipalities across the U.S. We specialize in bulk orders, compliance-driven products, and hard-to-source safety solutions. If you need volume pricing, project quotes, or help finding the right product for your application, our team is ready to help — reach out anytime for a fast, no-pressure quote.



