EXCELLENT WRITING & DRY ERASE PERFORMANCE (EXACT SIZE 47.6” x 34.6”): Suitable for Almost Branded Dry Erase Markers for Office and Home and University and Dormitory, Smooth Scratch-Resistant Premium Surfaces, ULTRA-CLEAN Wipe-Off, 5-Years Guarantee Under Normal usage. Suggest Porcelain/Enameled Magnetic Whiteboard for Heavy Usage STURDY AND DURABLE CONSTRUCTION: NEVER Warp, NEVER Crease, NEVER Bubble after Years, Anti-Scratch SILVER Aluminum Frame (NEVER Turn Black), Round Nylon Corners (NEVER Broken), Detachable Aluminum Marker Tray WALL-MOUNTED IN PORTRAIT OR LANDSCAPE: NEVER Worried about Drop-Down, Concealed Installation-Kits Offered in the Box, Detachable Aluminum Marker Tray