CorLiving BAF-290-B Ashland Bunk Bed, Twin-Over-Full, Dark Cappuccino Guardrails and safety hardware included Each bed has 13 slats of support that eliminate the need for a box spring Secured angled ladder Top fits standard Twin mattress 39" x 75" || Bottom fits standard Full/Double 54" x 75" Meets current US and Canadian Bunk Bed Safety Standards and exterior finish tested and certified to conform to US Safety Standards