Heavy-Duty Corrugated Material for Lasting Use：Crafted from thick,corrugated cardboard, our presentation boards are built to be sturdy and reliable. They resist warping and withstand the rigors of transport and repeated use, ensuring your display looks professional from setup to takedown. Three Practical Sizes to Fit Your Project Needs：Available in multiple sizes to suit various applications:Large 36"x48" for impactful booth displays, Medium 26"x17" for standard science fairs, and Compact 21"x14" for portability. Please double-check the size you need before ordering to ensure a perfect fit for your project. Effortless Portability and Quick Setup：The trifold design is inherently portable and space-saving.Simply unfold the two side panels, and the board stands firmly on its own. When closed, it's lightweight and flat, making it easy for students and professionals to carry to school, events, or meetings. Smooth White Surface for Vibrant Creations：Features a bright white,smooth finish that provides an excellent backdrop for your work. It cleanly accepts markers, pens, adhesives, and printed materials, allowing your text and graphics to stand out with clarity for a polished and engaging presentation. Ideal for Academic, Business, and Event Displays：A versatile display solution trusted for school science fairs,classroom projects, business presentations, and promotional events. Its professional appearance and functional design make it a go-to choice for effectively communicating ideas in any setting. Sotitime 4PCS poster board posters 26*17 inch poster trifold poster board Suitable for family and school projects white poster board folding board Poster Boards