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More durable than standard file folders, file folders with reinforced two-ply tabs provide extra strength where you need it most. Use a rainbow of colors to categorize different types of folders or to complement your company colors or decor. An office necessity available in a variety of tab cuts for every filing need. Built stronger to last longer! 2-ply reinforced tabs add strength where you need it most. 11 pt. stock, 1⁄3 cut tab. Letter size.