24x30 4-Ply Acid Free Matboard Backing Most readymade frames come with either cardboard backing or treated masonite board. Although these materials are rigid enough to hold pictures behind glass, they are not ideal to place directly behind precious pieces
Framing for Lyon Road Art Prints, 1-3 Week Processing Time
USA - Choosing Mat Size
Backing Boards
Smooth White 8x10 Backing Board - Uncut Photo Mat Board (50-Sheets)
Textured Black Shadow Box Frame With Black Acid-Free Suede Backing – Poster Palooza
Archival Methods Museum Board is made of 100% cotton fiber. Bright White is a neutral tone board, is acid- and lignin-free and incorporates alkaline or neutral sizing. All boards are buffered with calcium carbonate. This ensures protection from the destructive effects of acid migration from the matted work and from a polluted environment that might cause the pH of the mat board to decrease (become more acidic) with age.
Archival Methods 4-ply Pearl White Conservation Mat Board (11 x 14, 25 Boards)
Mat Board Center, Double Mat - Acid Free, 8-ply Thickness, White Core - for Pictures, Photos, Framing (Off White Over Gold, 8x10 for 5x7, Pack of 5) - Yahoo Shopping
24 x 30 Wood Picture Poster Display Frames with Matboard (Wood 362) – Displays4Sale
Hustle And Bustle At The Cloud Gate by Esmeralda Ruiz — Emerald Art Gallery
High Quality Mat Board & Art Products
Westfall Framing - Wholesale Custom Size Archival Mat Board