Product Type: House Bunk Bed Size: Twin over twin Material (main): Pine + Plywood +PB Number of Slats: Top Bed: 14 pcs; Floor bed: nil Spring Box: No need Assembly Required: Yes Manual and Hardware: Yes Overall Product Dimension: 81.7” x 57.8” x 86.9” Overall Product Weight: 134.5 lbs Package Details: Please refer to the Specification Bed Weight Capacity: Bed: 200 lbs Suggested Mattress Thickness: 6 inches or less