Bookcase features 12-1/8"" deep shelves that adjust in 1/2"" increments, except for the bottom one, Heavy-gauge steel frame has baked enamel finish over rust-inhibiting phosphate pretreatment, Bookcase is certified by SCS to be in compliance with specific indoor air quality emission requirements and meets or exceeds applicable ANSI/BIFMA standards, SKU: SPRCH28894