Aviditi 1264 Single-Wall Long Corrugated Box, 12" Length x 6" Width x 4" Height, Kraft (Bundle of 25) Boxes are made from 200#/ECT-32 single wall kraft corrugated material where ECT stands for Edge Crush Test (ECT) rating Available in kraft color 25 per bundle Measures 12-inches length by 6-inches width by 4-inches height