This Single-Sided Slanted Shelves Duro Book Truck features Three slanted, single sided shelf design is ideal for wall or desk-side storage and Durable all-steel construction finished in nine powder paint options for years of reliable strength. Constructed from “prime” steel which has a 25% to 35% post-consumer recycled content. Truck is over 95% recyclable at the end of the product life cycle. All steel Bretford book trucks are certified to GREENGUARD Children & Schools Indoor Air Quality standards.