How do I confirm my chair model and version before ordering accessories or replacement parts? Check the product label on the underside of the seat or chassis and note the model number, version number, or serial number. If you’re still unsure of your chair’s model or version, contact us with the following: A photo of the product label A photo of the entire chair Photos of the relevant part and its connection point Your order number or purchase date Connectors and dimensions may vary between versions, so do not rely on appearance alone when ordering. We will confirm compatibility before you purchase. Back to FAQs List