16" x 16" x40" Telescoping Boxes 10/Bundle

Dimensions: Actual Height: 80" without overlap of top over bottom Material: Mainly C flute, with exceptions (B/C flute) for certain sizes Exceptions (B/C flute): S-19780 (6 x 6 x 48 - 90") S-20429 (8 x 8 x 48 - 90") S-14259 (24 x 8 x 57 - 108") Features: All boxes open along the length (the first dimension). Seams are glued. Specifications: Meets ASTM D5118 Terminology: 200# Test vs. 32 ECT (Edge Crush Test): 200# Test: 60% stronger bursting strength. Recommended by UPS for shipping up to 40 lbs. Pound Test Refers to Bursting Strength: 200# test boxes withstand 200 lbs/sq.in. of sidewall pressure before bursting. 32 ECT: Recommended by UPS for shipping up to 30 lbs. ECT Refers to Stacking Strength: 32 ECT boxes withstand 32 lbs/linear inch of stacking weight before crushing. An alternative for lightweight shipments. Here's a breakdown of these points: Dimensions: The boxes have an actual height of 80 inches without any overlap of the top over the bottom. This