Product Details: 20 1/2 x 20 1/2 x 40 Plain Kraft Telescoping Inner and Outer Box

The 20 1/2 x 20 1/2 x 40 Plain Kraft Telescoping Inner and Outer Box is designed for maximum versatility and protection when shipping or storing tall, oversized, or irregularly shaped items. Made from durable 32 ECT, 200# test corrugated kraft, this two-piece telescoping design allows for adjustable height and added stacking strength. Ideal for artwork, displays, industrial parts, or long products that require extra depth and support.