1.Specifications: 40mm x 40mm x 16 Gauge MS Square Pipe Legs and 25mm x 16 Gauge Square Pipe Leg Supports and Steps. Railings Meterial : 25mm x 16 Gauge Round Pipe. Beds Meterial: 18 Gauge CR Sheet. Lockers Meterial: 20 Gauge CR Sheet. Each Locker Size: 18" Width x 18" Depth x 12" Height. Bunk Bed Size: 30" Width x 72" Length x 72" Height. Finish: Powder Coated. ( Without Mattress )