Construction Expertly crafted from solid kiln-dried hardwood with birch veneers, and reinforced with corner blocking for structural integrity. Kiln-dried wood helps prevent warping, splitting, cracking and developing mildew. Tempered-glass hutch doors. Tempered glass is a safety glass that is manufactured through a process of extreme heating followed by rapid cooling, making it harder than normal glass and resistant to breakage. Edge rubbed by hand to reveal hints of the wood grain beneath...