Clear opening between posts:
    Nominal shelf width minus 1 1/4"

    Overall length:
    Length of continous run is the sum of the nominal section widths plus 1 1/4" to account for end posts

    Overall depth: Equals the nominal depth

    Vertical clearance between shelves: Equals the center-to-center shelf spacing minus 3/4"

    Vertical adjustment 2" on centers