The Lumex 4" Extension Legs by Graham Field are precision-engineered replacement components designed to increase the seat height of specific clinical care recliners. These extensions are crucial for tailoring patient positioning and enhancing caregiver ergonomics during treatments. Specifically built for round tube frame designs, they are compatible with the Lumex 566G, 587W, and 577RG series. Please note that these extensions are strictly intended for standard frames and are not compatible with drop-arm recliner models.