50 Full Sheets Acid Free (Will Not Harm Your Photos) Save Time And Money - Cut Your Own Mats! Makes A Great Backing Board Great For School Projects
Light Grey 8x10 Backing Board - Uncut Photo Mat Board (50-Sheets)
Electronics
Our 4-ply photo mat boards are Acid-Free and feature a White Core.
Steel Blue 32 x 40 Photo Mat Board Full Sheet - Uncut (10-Sheets)
What is the brown paper on the back of picture frames? - Quora
FRAMING MATS
Montreal, Glossary Of Picture Framing Terms
Calaméo - 2016 August
EUCATILE 32 sq. ft. 3/16 in. x 48 in. x 96 in. Beadboard White
PACKAGE INCLUDES: 10 full sheets of acid free uncut mat boards. OVERALL SIZE: 16 x 20 inches, 4-Ply thick (1.4 mm or 1/16 inch). COLOR: White Color,
Mat Board Center, 16x20 Picture Backing Board, Uncut Photo Mat Board (White, 10 Pack)
50 Full Sheets Acid Free (Will Not Harm Your Photos) Save Time And Money - Cut Your Own Mats! Makes A Great Backing Board Great For School Projects
Marzipan 8x10 Backing Board - Uncut Photo Mat Board (50-Sheets)
4 Ply Matboard at Jerry's Artarama
Mat Board: Oversize - American Frame
Mat Board Center, 50 Pieces 8x10 White Uncut Mat