The following OEM and aftermarket products are compatible with the EZ Glide Stair Chair from Ferno. The FERNO – EZ-Glide 59T Stair Chair glides patient loads up to 500 lb down stairs without carrying or lifting. The chair and track system carry the weight, not the operator, reducing fatigue and the risk of injury. Please note that different configurations of units may make them incompatible with certain accessories. If you should have any questions, please contact your MME customer representative or get in contact with one here: 855-774-4670 ME will continue to support the lifespan of your unit with quality accessories as well as premium preventive maintenance services through ReNew Biomedical. For more about servicing your devices, contact ReNew Biomedical here .