Colorado Twin Over Twin Bunk Bed By, Atlantic Furniture The Colorado has decorative scroll work at each 3” corner post. The solid hardwood construction has 26 steel reinforcement points and the choice of ladder provides safe and easy access to the top bunk. We certify this bunk bed model has been tested by an independent laboratory and is in compliance with ASTM F-1428 Standard Consumer Safety Specification for Bunk Beds and the Government Code of Federal Regulations 1213 and 1513