Key Takeaways

• Office phone booths should be evaluated using verified acoustic performance data rather than vague claims that they are soundproof.
• ISO 23351-1 measures speech level reduction and classifies office booths according to how effectively they reduce sound transmission.
• Class A and A+ booths may be preferable in quiet workplaces where speech privacy and minimizing distractions are especially important.
• Wall construction, acoustic glass, door seals, ventilation design, and interior sound absorption all influence a booth’s acoustic performance.
• Comparing laboratory reports, inspecting construction details, and testing booths in person can help businesses make more informed purchasing decisions.