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Open reference book representing the picture framing glossary

Filler Board

A board placed behind the artwork and mat inside the frame to fill extra space and help secure components. Often foam board or cardboard.

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Filler Board

Definition

Filler Board is a board placed behind the artwork and mat inside a frame to fill extra space, provide structural support, and help secure framing components. Common materials include foam board, cardboard, or acid-free backing board.

Applications

  • Prevent artwork from shifting within the frame.
  • Provide uniform support for framed pieces of varying depth.
  • Used in combination with spacers or risers for shadow box effects.

Best Practices

  • Use acid-free or archival-quality materials to prevent deterioration of artwork.
  • Cut filler boards to fit snugly without compressing the artwork.
  • Layer multiple thin boards instead of a single thick board when fine adjustment is needed.

Related Terms

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