Golden State Art, 16x20 White Backing Board, Backer Boards for Frame, Picture (10 Pack)

Uncut White Backboard - Pack of 10 Overall Size - 16x20 inches (fits 16x20 frame) White color on both sides and brown core. Great for pictures and

Pack of 25, 11x14 Pre-cut Mat with Whitecore fits 8x10 Picture + Backing + Bags.

Creative Picture Frames 8x10-inch Black Board with White Back Face Acid Free 4-ply Mat Backer Board (Pack of 25)

Somime 25 Pack Backing Boards Only - 11x14 Uncut White

Golden State Art, 16x20 Uncut Photo Mat Matboard, Black Backing Board for Frame, Picture (16x20, 10 Pack)

Golden State Art, 5x7 Backing Board Only - for Art, Photos, Print - 4-Ply - 50 Single Backing Boards (50 Pack) 5x7 50 Pack

Set of 10 8x10 inches White Picture Frame Mats Opening size is 6.5 x 8.5 for 7x9 picture Mats are beveled cut and 4-ply thick (1.4mm or 1/16 inch)

Golden State Art, Acid Free White Color with White Core Bevel Cut Photo Mat for Pictures - Excellent for Art Projects, Weddings, Baby Showers

Golden State Art, Pack of 5 Acid Free Bevel Cut 4-Ply Thickness White Core Picture Mats for Photos (Black, 8x10 for 5x7 Photo)

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

Frametory, 8.5x11 White Uncut Picture Mat Boards, Backing Boards for Frames, Photos, Crafts - Pack of 12

Somime 25 Pack Backing Boards Only - 8.5x11 Uncut

25 Chipboard Sheets 12 x 18 inch - 22pt (Point) Light Weight Brown Kraft Cardboard for Scrapbooking & Picture Frame Backing (.022 Caliper Thick)) Paper Board

Golden State Art, Pack of 10 16x20 inch Picture Backing Boards for Framing (10pcs Back Board only) : Electronics