This Bookshelf is composed of 100% solid wood, no particle board, MDF , or PLASTIC. ... fully functional accent bookshelf,  Heavy Duty Ball bearing slides on this unit have an operational work load of 220 pounds each, ensuring smooth reliable operation every time, we've also added completely concealed 200 p... Diy Furniture, Woodworking, Hidden Gun Storage, Hidden Gun Cabinets, Gun Storage, Wood Diy, Hidden Compartments, Gun Rooms, Heavy Duty