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Brand New seat pan in open box. NEW Replacement Herman Miller Aeron Classic Seat Pan – Parts only – No Chair. New OEM Herman Miller Aeron Classic Seat Pan Replacement Size B Burgundy 3D05. Herman Miller Aeron Chair OEM Replacement Seat Frame Pan Large Size B Burgundy 3D05 – NO CHAIR IS INCLUDED. How can I determine my chair size if the label is gone? – To determine the size of your chair, feel underneath the top back lip of the chair’s backrest for a number of bumps. 1 bump is A, 2 bumps are B, and 3 bumps are C. One can also measure the seat pan width: Small A is 19 inches wide, Medium B is 20.25 inches wide and Large C is 21.5 inches wide. ONLY FOR THE CLASSIC STYLE AERON – Not the Remastered Version.
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