24x36 Ultra-Black #8 boards are the blackest black available on the market. They are .055" thick, buffered pH neutral.
Crescent No. 8 Ultra-black Mounting Board, 11 X 14 Inches, Pack Of 40 : Target
3/16 Black Ultra Board in Popular Cut Sizes -ccut-316BUB-SP
Fast Change Frames
UCreate Pacon 22 x 28 Heavy Coated Black Poster Board
The Avengers 700th Edition (Vol. 8 #10 Jan 2019) Art Adams Retro Varia – Sports Poster Warehouse
Handprint Black Chalk Board (Common: 3/16 in. x 2 ft. x 4 ft.; Actual: 0.180 in. x 23.75 in. x 47.75 in.) 151267 - The Home Depot
New and improved, Crescent Ultra-Black Mounting Board has an intense black, smooth surface on both sides; perfect as a high-contrast mount for photography. Ultra-Black 8 is the blackest black board available on the market. Smooth on one side for mounting artwork and photographs, and textured on the other to accept pastels, chalk, and acrylic paint. Crescent Ultra-Black Mounting Boards cut cleanly and have a black core made from 100% recycled material.
Crescent Mounting Board - 16 x 20 x .055, Black
9 X 12 school packs (40 count) make it easy to stock up and save Blackest and most fade-resistant board available, solid Black color throughout
Crescent Creative Products Black Crescent Ultra 8 Mounting Board, Double-Sided, Bulk Pack, 40 Count, 9 x 12 Size, 9 x 12 Inches
Update your decor with this 8 x 24 Contemporary Black Solid Wood Frame. It's ideal to use for a photo, a poster, a mirror, a painting or a document.
8x24 - 8 x 24 Contemporary Black Solid Wood Frame with UV Framer's Acrylic & Foam Board Backing
Custom Printed Corrugated Plastic Boards & Signs at GotPrint