Quality Classrooms Premium Furniture - Birch hardwood construction, so strong your students' grandchildren could use this furniture! - Fully rounded, child proof edges. - Dowel joints - the strongest in wood furniture. - 15 year warranty. The longest warranty in the industry. 76cmH (30"H). Birch ply hardwood construction with three fixed shelves. 30"H x 36"W x 10"D.