Foamboard, also known as foam core or KT board, is a backing material widely used in framing art and photo mounting. It is made of an extruded polystyrene core covered on both sides with paper or plastic film. The board is like a sandwich structure.
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PREMIUM FOAM BOARD: This foam board is made of high quality polystyrene foam and cover with mat white paper, durable and Acid-free. 1/8INCH THICKNESS
50 Pack White Foam Board for Projects, 11 x 13.7Inch Foam Core Baking Board Mat Board Center, 1/8Inch Thick Polystyrene Foam Sheet for School
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Foamboard - White/White - 4' x 8' x 1 - Set Shop NYC
1-in x 4-ft x 8-ft Expanded Polystyrene Board Insulation in the Board Insulation department at
Insulation Foam Products - High-Quality Foam Panels - The Foam Company