Conservation mat boards are our highest quality, conservation grade mats made with 100% virgin alpha-cellulose surface, core and backing papers. Acid-Free & Lignin-Free, conservation quality, 4-ply mats, 1/16" thick. Mats are listed by Outside Dimension (Frame Size). Click on a product to see Opening Sizes.
!! Items listed with an * are Oversized Items (see Shipping tab above for more details)