These backing boards are 8.5 x 11. Precision-cut, acid free, and coated on one side, they are designed for magazines and are intended for use with BCW's magazine bags.
Pack of 100 E Gerber Half Back Premium Archival Magazine Backer Boards
Magazine Backer Boards for sale
How often should you replace the bags and boards when storing comic books? - Quora
Browse Supplies - Atomic Empire
Bags: 2-mil Crystal Clear, Archival Safe Polypropylene Bags: Dimensions (inches) 8 7/8 x 11 + 1-1/2 flap for closure Bags : Non-resealable
BCW Thick Magazine Bags and Backing Boards - 100 ct
Certified Acid Free - Independent Lab Tested Resealable strip on back of bag Bags fit most current magazines Bag Exterior Dimensions: 8 3/4 x 11 1/8
100 BCW Resealable Magazine Poly Bags and 100 Magazine Backer Boards
100 BCW Sheet Music Archival 2-mil Poly Bags +Acid Free Backer Boards backing
BCW 8.5 x 11 Magazine Backing Boards - 100ct
BATMAN STATUE-DARK CRUSADER - DC DIRECT-ALEX ROSS
Comic Bag & Board Combos - Combo Current Size - Comic Equip
E. Gerber Full-Back Current Comic Book Backing Boards - 6 3/4 x 10 1/2 for sale online
100 MAGAZINE PROTECTOR BAGS + BACKING BOARDS
BCW Magazine Backing Boards (100) - Atomic Empire
BATMAN STATUE-DARK CRUSADER - DC DIRECT-ALEX ROSS
Modern Comic Backing Boards