What seat height and backrest specs do I need in an ergonomic chair for someone 6'2" or taller?

Tall users need a seat height maximum of 21"–22" (standard chairs top out at 20"), a seat depth of 18"–21" for proper thigh support, and a backrest height of at least 22" above the seat to support the full lumbar and lower thoracic spine. The lumbar support height should be adjustable upward to 12" above the seat. Big-and-tall certified chairs specifically address all these dimensions; don't rely on a standard chair being "close enough." FindOfficeFurniture.com has ergonomic chairs built for tall users — call 888-719-4960.