Check the listing for details. SHS Heavy Duty Fits Herman Miller classic Aeron Chair as Replacement Cylinder. Condition: New. Listed at 26.99 USD. SHS Heavy Duty Fits Herman Miller Aeron Chair as Replacement Gas Cylinder Listing is for a brand new never used CLASS 4 WITH 350N, office chair seat height adjustment pneumatic gas lift cylinder complete with all parts ready to use. The black color of the spindle is made of hardened steel that was heat treated, which turned the color to black. Based on the specs of this cylinder, it's load capacity is 350 pounds. 4.5” stroke (seat travel from lowest to highest settings)Gas spring diameter 1.1”Support column is 2" in diameterDimensions when fully compressed: 11.5”. Fully extended: 16” Exceeds ANSI/BIFMA5.1-2011 standardsThe taper on both ends of this office chair seat height adjustment pneumatic gas cylinder is standard in the industry and should fit most chairs sold in the market regardless of who the manufacturer is. Package Include:1 x gas cylinder(The chair not included)We are so confidence of our product quality and offer 5 years replacement warranty.PaymentDelivery detailsTerms of salesContact usPaymentWe accept PayPal only. E-check thru PayPal takes 3-5 working days to be cleared. To avoid any shipping delay, pelase complete payment as soon as possible.Delivery details1. When the location of the item is shawn in USA, USA buyer ship from CA US. Other countries buyer ship from China.2. We will ship our products by airmail, please allow 1-2 business days for delivery handing time after payment have been cleared.3. We are try our best in order to minimize the import duties. Import duties, taxes and charges are not included in the item price or shipping charges. These charges are the buyer's responsibility.4. Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying.5. Besides, tracking number will be provided if you purchase the insurance and you can check the delivery status. Terms of sales1. We accept return for exchange or refund.2. When you received your package, promptly check the items to make sure the items are intact. Email us with pictures if defective items was found, we will resolve the problem ASAP.3. Please kindly contact us before return the item, we accept return for refund or exchange, but shipping cost is non-refundable.Contact usShould you have any question, please click "ask seller a question" to contact us.