4mm Thick Opaline Tempered Glass:36' x 24' Made of 4mm tempered safety glass, four times stronger than ordinary glass; this durable writing surface is designed for frequent use, will not dent, smudge or streak, super Easy to erase, tempered glass can effectively prevent breakage, high safety factor, in addition, this glass plate is magneticAdjustable height : 139-199cm from floor to the top of the glassboardAdjustable angle:The tilt angle ranges from 0-30 degrees, suitable for a variety of writing postures and peopleCasters with Locking:- With a locking system, you can easily move the whiteboard anywhere, and the brake system can be easily locked, so that the whiteboard will not shake when writingModern and well-designed shape:The one-piece solid ABS base is more stable to use, and the white stylish circular pattern makes it an elegant decoration