Backing boards are available in any size and quantity. Backers are used in show kits, or in the back of frames to protect and secure your art. Backing boards come in many styles including foam, conservation grade and self-adhesive.
ClearBags and Bainbridge Backing Board
Viewpoint Acid Free Foam Core Backing Boards
Backing Boards For Prints
50 pack 5x7 uncut backing board. This item comes with 50 single backing boards. The outside size is 5x7 and fits 5x7 Frame. Backing board is 4-ply
Golden State Art, 5x7 Picture Mat Matte Backerboards for Framing. Pack Contains 50 Backing Boards (White, 50 Pack)
Corri-Cor Mark 3 is made with more rigid double corrugated board and has the added benefit of a water-resistant coating on the back to protect the
Corri Cor Mark 3 : A1 Double Corrugated 2.8mm Backing Board - water-resistant
DensShield 1/2 in. x 4 ft. x 8 ft. Backer Board 855000 - The Home Depot
Tile Backer Board: Benefits & Uses - Online Insulation
18 x 24 25 Pack of Red Mat Boards, Backing Boards and Plastic
BCW Silver Comic Backing Boards