. . "Designates given materials used to close off the reverse side of paintings on canvas. Such materials include but are not limited to simple cardboard, Perspex (acrylic), Melinex (polyester). Backboards are applied either on the stretcher or on the frame, using screws, nails, or tape."@en . "backboards (framing and mounting equipment)"@en . "backboard (framing and mounting equipment)"@en . "2013-07-25T15:26:22"^^ . "2013-11-21T16:36:43"^^ . "300386800" . .