Designed for extreme durability, the solid pine framed chalkboard weighs nearly 20 lbs, 1.5x heavier than similar chalkboards, preventing damage by strong wind or accidental bumps on crowded streets. EXTRA LARGE SIZE: Oversized freestanding A-frame chalkboard sign commands instant attention, especially on crowded sidewalks and busy streets. Heavy-duty piano hinges connect at the top, making it foldable for easy storage. Huge industrial chalkboard stands 42 inches tall and 24 inches wide, with 3-inch legs. MAGNETIC BLACKBOARD SURFACE: Attract maximum attention with our chalkboard signs by placing magnets (magnet sold separately) on the board to hold printed fliers, catalogs, balloons, or carry-out menus. NO CHALK STAINS: For use with chalk ink markers or regular chalk, the nonporous porcelain steel chalkboard signs resist scratches, stains, and damage. UPC: 811814030219.