Description: 【Sturdy Construction】: Office Chair backrest frame is made of plastic, highly sturdy, and can offer reliable support for long term use. Ideal for long time sitting. 【Comfortable Fit】: Office Chair backrest frame only is designed to provide comfortable back support, helping to reduce discomfort when sitting in front of a computer or desk for long periods. Improves sitting comfort. 【Universal Compatibility】: Back Support frame has mounting holes that make it compatible with most office chairs, ensuring it can easily integrate into your existing office environment. Fits various office chairs. 【Easy Installation】: Lift Chair Part has precise engineering, allowing it to be installed quickly and easily. The backrest stays firmly in place, ensuring stable performance. Simplifies the installation process. 【Stylish Design】: Office Chair replacement component features a simple and smooth streamlined design, combining modern aesthetics with practical functions. Adds to the office. Specification: Material: Plastic Size Chart: 52.5cmx28.5cm/20.67inchx11.22inch Package Includes: 1 Office Chair Backrest Frame Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.