🚀 Upgrade Your Aeron Experience! Exceeds ANSI/BIFMA5.1-2011 standards, ensuring durability and reliability. Enjoy a 5-year replacement warranty, because your comfort is our priority. Compatible with Aeron Chair sizes A, B, and C, perfect for any workspace. Experience seamless height adjustment with a 4.5" stroke for personalized seating. Simple adjustments for optimal performance, ensuring your chair lifts smoothly. 350 lbs Capacity 4.5" Stroke Class 4 Standard This heavy-duty gas lift cylinder is a premium replacement for Herman Miller Classic Aeron Chairs, designed for optimal height adjustment and exceptional load capacity. With a 4.5" stroke and a robust 350 lbs weight limit, it meets rigorous ANSI/BIFMA standards, ensuring both safety and comfort. Compatible with Aeron Chair sizes A, B, and C, it comes with a 5-year warranty for peace of mind.