24 x 4 x 4 Corrugated Cardboard Boxes

The boxes are constructed from 200#/ECT-32 kraft corrugated fiberboard, a heavy-duty single-wall material that provides excellent stacking strength and puncture resistance. This construction meets recognized ASTM standards and ensures reliable protection for long, narrow items during transit and repeated handling.

Yes. These are telescoping boxes consisting of an inner and outer piece. The outer box slides over the inner box, creating an adjustable length configuration that accommodates items of varying sizes. This design eliminates the need for multiple fixed-size boxes when shipping products of slightly different lengths.

F.O.L. stands for Full Over Lap, a bottom closure style where the bottom flaps completely overlap each other. This provides significantly greater structural integrity at the base of the box compared to regular slotted closures, making it particularly important for heavier or fragile elongated items that place stress on the bottom during shipping.

Yes. Cardboard Boxes 4 U offers custom sizes in addition to standard stock dimensions. Additional widths including 12, 14, 16, 18, 20, and 24 inches are available, along with fully custom configurations. Contact the sales team at (888) 333-9513 to discuss custom dimensions, volume pricing, and lead times for your specific requirements.

All boxes are sold and shipped flat in bundle quantities, which significantly reduces shipping costs and storage space requirements. The flat-pack format allows businesses to maintain an on-site inventory without consuming excessive warehouse space, making them practical for e-commerce operations, fulfillment centers, and industrial facilities with limited storage.

Yes. Corrugated cardboard boxes from Cardboard Boxes 4 U are fully recyclable, supporting sustainable packaging practices. The kraft corrugated material is accepted by most municipal and commercial recycling programs. Choosing recyclable corrugated packaging can help businesses meet sustainability goals and reduce overall packaging waste across their shipping operations.

These boxes are certified to ASTM D5118 (corrugated fiberboard box testing), ASTM D4727 (corrugated and solid fiberboard sheet standards), and CSA Class Code A, ensuring they meet rigorous industry standards for structural performance, material quality, and packaging classification. These certifications provide confidence for businesses that require verified, compliant shipping materials.