Best-Rite Magne-Rite Magnetic Whiteboard, Alum trim and tray, 4 x 4 feet (219ND) Magne-Rite boards feature a magnetic dry erase surface made with PVC-coated steel, specially engineered for exceptionally smooth writability. Glossy white surface erases cleanly with no ghosting and provides excellent color contrast with markers. Anodized aluminum ABC Trim has a .88" profile with hairline mitered corners. Top corners are protected with aluminum end caps. Full-length accessory tray includes plastic end caps to eliminate sharp corners. Ten year guarantee.