ASSEMBLY INSTRUCTION TWIN LOT BED WITH DRAWERS WF284155/WF284156/WF284157 | SAFETY WARNINGS ! {This bed is designed for use only mattresses) meeting the flowing specifications on the tipper bunk, and lows bunk: Bed Type Length Width Thickness Twin Standard Fats max 2. Replacement parts including additional guardrails, may be obtained from anyway our (CLOUDED TECHNOLOGICAL) dealers 3.