WELCOME!!! THANK YOU FOR SHOPPING WITH SKU: 1-BBSIL Brand: BCW Weight: 4.30 lbs./pack Preserve the condition and value of your silver and bronze age comics with BCW Silver Backing Boards. These backing boards are certified acid-free through independent laboratory testing, guaranteeing that your comics are shielded from the harmful effects of acidity over time. Crafted from high-quality 24 point solid bleached sulfate, these boards are coated and buffered on one side with 3% calcium carbonate for added strength and protection. Invest in the longevity of your collectibles with BCW Silver Backing Boards, the trusted choice for comic book enthusiasts and collectors alike. Use these along with Silver Comic Bags to protect and store your Silver Age comics. Certified Acid Free - Independent Lab Tested Use with Silver Poly Mylar Bags Exterior Dimensions: 7? x 10 oe? 100 Boards per Pack This listing is for 500 Boards. Sharp Bros Gaming ships orders Same Day-2 Business day(s) using USPS, UPS and FedEx Sharp Bros Gaming currently only ships to the continental United States: Street, PO, APO FPO Sharp Bros Gaming cannot ship orders placed AFTER 1:00 PM Eastern same day All orders placed after Friday at 1:00 PM Eastern will be shipped the following Monday Sharp Bros Gaming offers free shipping on most purchases anywhere in the continental United States! Sharp Bros Gaming takes extra care to prevent damage during shipping Sharp Bros Gaming offers tracking on all purchases anywhere in the continental United States! VIEW OUR STORE FOR DIFFERENT QTY's OR MESSAGE US WITH AN INQUIRY!