La-Z-Boy - Ergonomic Office Chair with Lumbar Support Reclining Backrest & Adjustable Height Quilted Leather Executive Office Chair - Midnight Black

Thank you for reaching out, it is very important to us that we are able to assist with any clarifications regarding your chair. For your chair, it does not arrive preassembled, however if you or a friend/family member/neighbor are not able to assemble it there are local repair/assembly services that can assist if you search in your area. You can also give us a call at 800-379-9773 Monday-Friday 7:00am-4:00pm PST and an agent can walk you through the assembly process or answer any questions you might have on any step.

Thank you for reaching out, we are happy to clarify anything regarding your chair. The minimum height from the floor to the seat is 19.5 inches and the maximum is 22.5 inches. Please do not hesitate to reach out if you have any other questions about your chair. You can reach us at 800-379-9773 Monday-Friday 7:00am-4:00pm PST.

The chair is rated to hold 275 lbs. I weigh 246 and while I've had it only a month, so far it is both comfortable and holds me at the maximum height. Like you, I am concerned about how long the hydraulic cylinder will hold its pressure. That was the reason I shopped a new chair. The previous chair I had got to where it would not stay at maximum height. I dislike a chair that won't hold me at the heighth I set it at. The true test is "time." If it holds its pressure for five years I'll be content. Anything less will disappoint me.