n.a corrugated board that is folded and inserted in a box to create a false back against which materials stand uprightNPS 2008, 65If you don’t have enough folders to fill a box completely, insert a spacer board to keep the folders upright. (A spacer board is a length of acid-free corrugated board. It can be folded to the desired size and inserted in a box to create a false back, against which folders can rest.)Ritzenthaler 2010, 197Spacer board can be made in any dimensions desired to accommodate various sizes and formats of storage boxes; score lines on both ends of the boards make them adjustable to support varying quantities of records.Impastato 2016, 1Conservation notes: Both scrapbooks are very fragile. Placed into archival boxes with spacer board for added support.NARA 2016dThe spacer boards shall be made from corrugated paperboard with a single wall construction (three-layer lamination) and type “B” fluting that runs parallel with the length of the board. Each spacer board shall have 5 score lines at each end, running perpendicular with the length of the board. The corners shall be rounded. The edges shall be serrated.NARA 2016eSpacer Boards ¶ To be used in partially filled archives boxes to keep records upright. Constructed of acid-free corrugated paperboard, the spacer boards are designed to fit standard letter and legal size archives boxes. There are score lines on each end of the board; folds should be made as necessary, depending on the size and contents of a box.LoC 2016b, 3The spacer boards must be constructed of a single sheet of single-wall B-Flute corrugated board, as defined in section 6.4 of ASTM D 4727. Each board must be creased vertically 6 times, from the right and left edges, spaced one inch apart, totaling 12 creases. The center of the board, measuring 11 3/4 inches, must be free of creases.NARA 2017cSince the series was small, James used a narrow box to save space on the shelf and an archival spacer board to prevent the records from slumping.DPA 2019, 2B. Do not under pack boxes. Records bend, slump, and will become curved and distorted when boxes are not filled to capacity. Agencies should use corrugated spacer boards to support records in an upright position when files are stored in partially filled boxes. ¶ a. Temporary record boxes may use corrugated spacer boards made of normal cardboard. ¶ b. Permanent record boxes must use acid-free corrugated spacer boards. ¶ C. Spacer boards should be folded along the score lines at each end and be positioned in the backs of boxes so that the folders rest against the flat side of the board. ¶ a. The State of Delaware does not have a contract for spacer boards; therefore, this is an open market item. Spacer boards may be made from boxes/lids.PEL 2022Corrugated spacer board designed by the National Archives to keep file folders standing up straight when a document case is not full.
A spacer board—also called a spacer, document support spacer, or document box spacer—is used to prevent the materials from curling or bending over time.