Magnetic porcelain steel whiteboards are engineered for superior color contrast with dry erase markers. Standard gloss dry erase surface provides superior writability and erasability with no ghosting. Reduced surface light distortion enhances visibility to provide optimum eye comfort. Steel is permanently laminated to a light weight substrate for stability and durability. Also available in 5'' high surface to accommodate all ages and all abilities. Anodized aluminum trim has a .88" profile with hairline mitered corners. Includes a full-length tackable map rail with a colored cork insert, and a full-length accessory tray with rubber Dura-Safe end caps to eliminate sharp edges. Class A Fire Rated board. A full test report copy is available upon request. Fifty year limited warranty. Has achieved GREENGUARD GOLD Certification. For interactive projectors with strict flatness requirements, we recommend the Interactive Projector Board or Projection Whiteboard with Polyvision duo Surface, providing guaranteed results for projectability, erasability and durability.