8.5x11 White Backing Board with Browncore

Give your art a finished look by adding a backing board behind your art, print, or photo mats. A great choice to make your photo mats more sturdy by

Golden State Art, Pack of 10 White Pre-Cut 11x14 Picture Mat for 8.5x11 Photo with White Core Matte SETS. Includes 10 High Premier Acid Free Bevel Cut

MBC MAT BOARD CENTER Mat Board Center, 8x10 Picture Mat Sets for 5x7 India

Pack of 100, 8x10 Pre-cut Mat with Whitecore fits 5x7 Picture + Backing + Bags.

Pack of 50, 11x14 Pre-cut Mat with Whitecore fits 4x6 Picture + Backing + Bags.

Golden State Art, Pack of 100, 5x7 White Backing Boards - Uncut, Acid Free, 4-Ply Thickness, Signature Friendly - Great for Photos, Pictures, Events, Frames, Prints

The opening size is 10.5x13.5 for 11x14 print. The mats are beveled cut with white core and 4-ply thick (about 1.4 mm or 1/16 inch). The re-sealable adhesive strip of the clear bag is below the opening of the bag instead of on the flap.

Golden State Art , Pack of 25 8x10 Black Picture Mats Mattes with White Core Bevel Cut for 5x7 Photo + Backing + Bags

AUEAR 5 Pack White 8X10 Bevel Cut White Core Picture Mat for 5X7 Photo/Print/Artworks - 5 Pre-Cut Acid Free Picture Frame Mat + 5 Backing Board + 5 Clear Bag 8x10 White

Mat Board Center is a national wholesale supplier of high quality paper mat boards. 5 1/4 x 7 1/8 Crystal Clear 4mil Self Adhesive Seal Cello Lip Tape

11x14 White Backing Boards Uncut, Acid Free, 4-Ply Thickness Signature Friendly

White Backing Board with Browncore

Golden State Art, 25 Pack 8.5X11 Bright White Backing Board for Frames, Pictures, Photos and More

11x14 Double Mat with Whitecore fits 8x10 Picture + Backing + Bags

Golden State Art Pack of 100 8x10 White Backing Boards - Uncut Acid Free 4-Ply Thickness Signature Friendly - Great for Photos Pictures Events Frames Prints 8x10 (Set of 100) White

MBC MAT BOARD CENTER, Pack of 25, 8.5x11 White Backing Boards - 4-Ply Thickness - for Pictures, Photos, Framing Support - Great for DIY Projects, Art, Prints

Bookbinding Backing Irons for Backing in a Finishing

Choosing Backing for your Big Bed Quilt — Stitched in Color

BCW Current Comic Book Backing Boards - 1 Pack (100

KATBAK® Ceramic Weld Backing On Gullco International, Inc.

Turbo Backing Pads – Walter Surface Technologies