60 x DOUBLE WALL CARDBOARD BOXES. (All measurements are Length x Width x Height). The measurements listed are for the internal available space. All measurements in inches are rounded. Approximate Thickness is 5mm. Extra Strong Double Wall Boxes. The Double Wall Corrugation Provides Extra Strength. Recommended for Heavy Weight Items. Perfect for House or Office Moves. Long Term Storage – Completely Stackable. Sending Items with Couriers. The outside of the cardboard boxes is made from a composite of Recycled Paper & Kraft Paper (Kraft)(K). The inside of the cardboard boxes is made from 100% Recycled Paper (Test)(T). (The Official Specification is K/T, BC Flute). All sizes and thicknesses are approximate, and our standard tolerances are in line with industry standards. However, note in particular that widths may vary by +/-5%, depths by +/-5%, thickness by +/-5%, along with weight and quantities by +/-5%. ALL ORDERS PLACED BY 11am WILL BE DISPATCHED ON THE SAME DAY. Note that Courier Companies do NOT deliver on weekends. WE CAN ONLY DELIVER WITHIN MAINLAND UK (ZONES A&B) VIA COURIER AT THE ADVERTISED PRICE. Our aim is to keep our customers 100% happy. Thanks, we really appreciate it!