| 12 x 3 x 3" | ECT-32 Single Wall Corrugated | 25/1800 | $.75 | $.74 | $.72 | $.70 | $.69 | |
| 12 x 4 x 4" | ECT-32 Single Wall Corrugated | 25/900 | .53 | .51 | .50 | .49 | .48 | |
| 12 x 4 x 48" | Inside Telescopic HSC | 15/180 | 5.56 | 5.43 | 5.29 | 5.16 | 5.11 | |
| 12 x 5 x 4" | ECT-32 Single Wall Corrugated | 25/1500 | .52 | .51 | .50 | .49 | .48 | |
| 12 x 5 x 5" | ECT-32 Single Wall Corrugated | 25/1000 | .53 | .52 | .51 | .50 | .49 | |
| 12 x 6 x 2" | ECT-32 Single Wall Corrugated | 25/1500 | .87 | .85 | .82 | .80 | .80 | |
| 12 x 6 x 3" | ECT-32 Single Wall Corrugated | 25/1250 | .55 | .54 | .52 | .51 | .50 | |
| 12 x 6 x 4" | ECT-32 Single Wall Corrugated | 25/1000 | .55 | .53 | .52 | .51 | .50 | |
| 12 x 6 x 5" | ECT-32 Single Wall Corrugated | 25/1000 | .61 | .60 | .58 | .57 | .56 | |
| 12 x 6 x 6" | ECT-32 Single Wall Corrugated | 25/1000 | .63 | .62 | .60 | .58 | .58 | |
| 12 x 6 x 6" | 4,2" | 25/750 | .71 | .69 | .68 | .66 | .65 | |
| 12 x 6 x 6" | ECT-44 Single Wall Corrugated | 25/500 | .90 | .88 | .86 | .84 | .83 | |
| 12 x 6 x 8" | ECT-32 Single Wall Corrugated | 25/750 | .80 | .78 | .76 | .74 | .73 | |
| 12 x 6 x 12" | ECT-32 Single Wall Corrugated | 25/500 | .87 | .85 | .83 | .81 | .80 | |
| 12 x 6 x 12 3/4" | ECT-44 Single Wall Corrugated | 20/560 | 5.88 | 5.73 | 5.59 | 5.45 | 5.40 | |
| 12 x 7 x 5" | ECT-32 Single Wall Corrugated | 25/900 | .91 | .89 | .86 | .84 | .84 | |
| 12 x 7 x 7" | ECT-32 Single Wall Corrugated | 25/900 | .95 | .93 | .91 | .88 | .88 | |
| 12 x 8 x 3" | ECT-32 Single Wall Corrugated | 25/1000 | .94 | .92 | .90 | .87 | .87 | |
| 12 x 8 x 4" | ECT-32 Single Wall Corrugated | 25/750 | .71 | .70 | .68 | .66 | .66 | |
| 12 x 8 x 5" | ECT-32 Single Wall Corrugated | 25/750 | .79 | .78 | .76 | .74 | .73 | |
| 12 x 8 x 6" | ECT-32 Single Wall Corrugated | 25/750 | .71 | .70 | .68 | .66 | .65 | |
| 12 x 8 x 6" | ECT-48 Double Wall Corrugated | 15/300 | 2.00 | 1.95 | 1.90 | 1.85 | 1.84 | |
| 12 x 8 x 7" | ECT-32 Single Wall Corrugated | 25/500 | .77 | .75 | .73 | .72 | .71 | |
| 12 x 8 x 8" | ECT-32 Single Wall Corrugated | 25/500 | .75 | .73 | .72 | .70 | .69 | |
| 12 x 8 x 8" | White | 25/900 | 1.19 | 1.16 | 1.13 | 1.10 | 1.10 | |
| 12 x 8 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 1.37 | 1.34 | 1.31 | 1.27 | 1.26 | |
| 12 x 9 x 2" | ECT-32 Single Wall Corrugated | 25/900 | .92 | .90 | .88 | .86 | .85 | |
| 12 x 9 x 3" | ECT-32 Single Wall Corrugated | 25/750 | .71 | .69 | .67 | .66 | .65 | |
| 12 x 9 x 4" | ECT-32 Single Wall Corrugated | 25/500 | .76 | .75 | .73 | .71 | .70 | |
| 12 x 9 x 4" | White | 25/500 | .90 | .87 | .85 | .83 | .82 | |
| 12 x 9 x 5" | ECT-32 Single Wall Corrugated | 25/500 | .73 | .72 | .70 | .68 | .67 | |
| 12 x 9 x 6" | ECT-32 Single Wall Corrugated | 25/500 | .90 | .88 | .86 | .84 | .83 | |
| 12 x 9 x 6" | 4,2" | 25/500 | .95 | .93 | .91 | .88 | .88 | |
| 12 x 9 x 6" | ECT-48 Double Wall Corrugated | 15/450 | 2.20 | 2.15 | 2.09 | 2.04 | 2.02 | |
| 12 x 9 x 7" | ECT-32 Single Wall Corrugated | 25/500 | .87 | .85 | .83 | .81 | .80 | |
| 12 x 9 x 8" | ECT-32 Single Wall Corrugated | 25/500 | .92 | .90 | .88 | .86 | .85 | |
| 12 x 9 x 9" | ECT-32 Single Wall Corrugated | 25/500 | .92 | .90 | .88 | .85 | .85 | |
| 12 x 9 x 9" | ECT-48 Double Wall Corrugated | 15/300 | 2.66 | 2.59 | 2.53 | 2.47 | 2.44 | |
| 12 x 9 x 10" | ECT-32 Single Wall Corrugated | 25/500 | 1.02 | .99 | .97 | .94 | .93 | |
| 12 x 9 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 1.09 | 1.06 | 1.04 | 1.01 | 1.00 | |
| 12 x 10 x 2" | ECT-32 Single Wall Corrugated | 25/900 | 1.37 | 1.34 | 1.31 | 1.27 | 1.26 | |
| 12 x 10 x 3" | ECT-32 Single Wall Corrugated | 25/500 | .80 | .78 | .76 | .75 | .74 | |
| 12 x 10 x 4" | ECT-32 Single Wall Corrugated | 25/750 | .78 | .76 | .74 | .72 | .72 | |
| 12 x 10 x 4" | 2" | 25/750 | .78 | .76 | .75 | .73 | .72 | |
| 12 x 10 x 4" | ECT-44 Single Wall Corrugated | 25/750 | 1.83 | 1.78 | 1.74 | 1.69 | 1.68 | |
| 12 x 10 x 5" | ECT-32 Single Wall Corrugated | 25/500 | .85 | .83 | .81 | .79 | .79 | |
| 12 x 10 x 6" | ECT-32 Single Wall Corrugated | 25/500 | .86 | .84 | .82 | .80 | .79 | |
| 12 x 10 x 6" | 4,2" | 25/500 | 1.17 | 1.14 | 1.11 | 1.08 | 1.08 | |
| 12 x 10 x 6" | White | 25/500 | 1.05 | 1.03 | 1.00 | .98 | .97 | |
| 12 x 10 x 6" | ECT-44 Single Wall Corrugated | 25/500 | 1.24 | 1.21 | 1.18 | 1.15 | 1.14 | |
| 12 x 10 x 7" | ECT-32 Single Wall Corrugated | 25/500 | .95 | .93 | .91 | .88 | .88 | |
| 12 x 10 x 8" | ECT-32 Single Wall Corrugated | 25/500 | .94 | .92 | .90 | .88 | .87 | |
| 12 x 10 x 8" | 6,4" | 25/500 | 1.03 | 1.01 | .98 | .96 | .95 | |
| 12 x 10 x 8" | White | 25/500 | 1.21 | 1.18 | 1.15 | 1.13 | 1.12 | |
| 12 x 10 x 8" | ECT-44 Single Wall Corrugated | 25/500 | 1.49 | 1.45 | 1.41 | 1.38 | 1.37 | |
| 12 x 10 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.03 | 1.01 | .98 | .96 | .95 | |
| 12 x 10 x 10" | ECT-32 Single Wall Corrugated | 25/500 | .96 | .94 | .91 | .89 | .88 | |
| 12 x 10 x 10" | White | 25/500 | 1.35 | 1.31 | 1.28 | 1.25 | 1.24 | |
| 12 x 10 x 10" | ECT-48 Double Wall Corrugated | 15/300 | 3.02 | 2.94 | 2.87 | 2.80 | 2.77 | |
| 12 x 10 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 1.31 | 1.28 | 1.25 | 1.21 | 1.20 | |
| 12 x 10 x 14" | ECT-32 Single Wall Corrugated | 25/500 | 2.07 | 2.02 | 1.97 | 1.92 | 1.90 | |
| 12 x 11 x 6" | ECT-32 Single Wall Corrugated | 25/500 | .99 | .96 | .94 | .91 | .91 | |
| 12 x 12 x 2" | ECT-32 Single Wall Corrugated | 25/500 | 1.58 | 1.55 | 1.51 | 1.47 | 1.46 | |
| 12 x 12 x 3" | ECT-32 Single Wall Corrugated | 25/500 | .91 | .89 | .87 | .84 | .84 | |
| 12 x 12 x 4" | ECT-32 Single Wall Corrugated | 25/500 | .92 | .90 | .88 | .86 | .85 | |
| 12 x 12 x 4" | 2" | 25/500 | 1.12 | 1.09 | 1.07 | 1.04 | 1.03 | |
| 12 x 12 x 4" | White | 25/500 | 1.74 | 1.70 | 1.65 | 1.61 | 1.60 | |
| 12 x 12 x 5" | ECT-32 Single Wall Corrugated | 25/500 | 1.01 | .98 | .96 | .94 | .93 | |
| 12 x 12 x 6" | ECT-32 Single Wall Corrugated | 25/500 | .95 | .92 | .90 | .88 | .87 | |
| 12 x 12 x 6" | 4" | 25/500 | 1.06 | 1.03 | 1.00 | .98 | .97 | |
| 12 x 12 x 6" | White | 25/500 | 1.36 | 1.33 | 1.30 | 1.27 | 1.25 | |
| 12 x 12 x 6" | ECT-44 Single Wall Corrugated | 25/500 | 1.38 | 1.35 | 1.31 | 1.28 | 1.27 | |
| 12 x 12 x 6" | ECT-48 Double Wall Corrugated | 15/300 | 1.79 | 1.75 | 1.70 | 1.66 | 1.65 | |
| 12 x 12 x 7" | ECT-32 Single Wall Corrugated | 25/500 | 1.07 | 1.04 | 1.02 | .99 | .98 | |
| 12 x 12 x 8" | ECT-32 Single Wall Corrugated | 25/500 | 1.06 | 1.03 | 1.00 | .98 | .97 | |
| 12 x 12 x 8" | 6,4" | 25/500 | 1.54 | 1.50 | 1.46 | 1.43 | 1.41 | |
| 12 x 12 x 8" | White | 25/500 | 1.69 | 1.65 | 1.61 | 1.57 | 1.56 | |
| 12 x 12 x 8" | ECT-44 Single Wall Corrugated | 25/500 | 2.49 | 2.43 | 2.37 | 2.31 | 2.29 | |
| 12 x 12 x 8" | ECT-48 Double Wall Corrugated | 15/300 | 2.01 | 1.96 | 1.91 | 1.86 | 1.85 | |
| 12 x 12 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.22 | 1.19 | 1.16 | 1.13 | 1.12 | |
| 12 x 12 x 10" | ECT-32 Single Wall Corrugated | 25/500 | 1.14 | 1.11 | 1.09 | 1.06 | 1.05 | |
| 12 x 12 x 10" | 8,6,4" | 25/500 | 1.62 | 1.58 | 1.54 | 1.50 | 1.49 | |
| 12 x 12 x 10" | White | 25/500 | 1.91 | 1.86 | 1.82 | 1.77 | 1.76 | |
| 12 x 12 x 10" | ECT-44 Single Wall Corrugated | 25/500 | 2.67 | 2.60 | 2.54 | 2.47 | 2.45 | |
| 12 x 12 x 10" | ECT-48 Double Wall Corrugated | 15/150 | 2.16 | 2.10 | 2.05 | 2.00 | 1.98 | |
| 12 x 12 x 11" | ECT-32 Single Wall Corrugated | 25/500 | 1.34 | 1.31 | 1.27 | 1.24 | 1.23 | |
| 12 x 12 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 1.08 | 1.05 | 1.03 | 1.00 | .99 | |
| 12 x 12 x 12" | 10,8" | 25/500 | 1.37 | 1.34 | 1.30 | 1.27 | 1.26 | |
| 12 x 12 x 12" | White | 25/500 | 1.53 | 1.50 | 1.46 | 1.42 | 1.41 | |
| 12 x 12 x 12" | ECT-44 Single Wall Corrugated | 25/250 | 1.93 | 1.88 | 1.84 | 1.79 | 1.78 | |
| 12 x 12 x 12" | V3c - 350# Single Wall | 20/200 | 9.04 | 8.82 | 8.60 | 8.38 | 8.31 | |
| 12 x 12 x 12" | ECT-48 Double Wall Corrugated | 15/150 | 2.06 | 2.01 | 1.96 | 1.91 | 1.90 | |
| 12 x 12 x 12" | ECT-71 Double Wall Corrugated | 15/150 | 7.72 | 7.53 | 7.35 | 7.16 | 7.10 | |
| 12 x 12 x 12" | Printed Deluxe Packing Box | 25/500 | 2.00 | 1.95 | 1.90 | 1.85 | 1.84 | |
| 12 x 12 x 12" | ECT-90 Triple Wall Corrugated | 5/30 | 27.67 | 27.00 | 26.33 | 25.66 | 25.44 | |
| 12 x 12 x 13" | ECT-32 Corrugated | 25/300 | 1.51 | 1.48 | 1.44 | 1.40 | 1.39 | |
| 12 x 12 x 14" | ECT-32 Corrugated | 25/250 | 1.69 | 1.65 | 1.61 | 1.56 | 1.55 | |
| 12 x 12 x 15" | ECT-32 Corrugated | 25/250 | 1.59 | 1.55 | 1.51 | 1.48 | 1.46 | |
| 12 x 12 x 16" | ECT-32 Corrugated | 25/250 | 1.62 | 1.58 | 1.54 | 1.50 | 1.49 | |
| 12 x 12 x 16" | ECT-48 Double Wall Corrugated | 15/150 | 3.62 | 3.53 | 3.44 | 3.35 | 3.33 | |
| 12 x 12 x 18" | ECT-32 Single Wall Corrugated | 25/250 | 1.75 | 1.70 | 1.66 | 1.62 | 1.60 | |
| 12 x 12 x 18" | 16,14,12,10" | 25/500 | 1.78 | 1.73 | 1.69 | 1.65 | 1.63 | |
| 12 x 12 x 18" | ECT-48 Double Wall Corrugated | 15/150 | 4.82 | 4.70 | 4.58 | 4.47 | 4.43 | |
| 12 x 12 x 20" | ECT-32 Single Wall Corrugated | 25/250 | 1.85 | 1.81 | 1.76 | 1.72 | 1.70 | |
| 12 x 12 x 24" | 2 Cubic Feet | 25/250 | 2.10 | 2.05 | 1.99 | 1.94 | 1.93 | |
| 12 x 12 x 30" | ECT-32 Single Wall Corrugated | 15/240 | 2.45 | 2.39 | 2.34 | 2.28 | 2.26 | |
| 12 x 12 x 36" | 3 Cubic Feet | 15/240 | 3.02 | 2.94 | 2.87 | 2.80 | 2.77 | |
| 12 x 12 x 40" | ECT-32 Single Wall Corrugated | 15/120 | 3.21 | 3.13 | 3.05 | 2.97 | 2.95 | |
| 12 x 12 x 46" | Inner Lamp Box HSC | 15/120 | 3.75 | 3.66 | 3.56 | 3.47 | 3.44 | |
| 12 x 12 x 48" | ECT-32 Single Wall Corrugated | 15/120 | 5.15 | 5.03 | 4.90 | 4.78 | 4.74 | |
| 12 x 12 x 48" | ECT-48 Double Wall Corrugated | 10/90 | 9.67 | 9.44 | 9.20 | 8.97 | 8.89 | |
| 12 x 12 x 48" | Inside Telescopic HSC | 15/120 | 6.10 | 5.95 | 5.80 | 5.66 | 5.61 | |
| 12 x 12 x 52" | ECT-32 Single Wall Corrugated | 15/240 | 6.69 | 6.53 | 6.37 | 6.21 | 6.15 | |
| 12 x 12 x 60" | ECT-32 Single Wall Corrugated | 10/120 | 7.24 | 7.06 | 6.89 | 6.71 | 6.65 | |
| 12 x 12 x 72" | ECT-32 Single Wall Corrugated | 10/120 | 8.73 | 8.52 | 8.31 | 8.10 | 8.03 | |
| 12 x 12 x 72" | Inside Telescopic HSC | 15/90 | 12.89 | 12.58 | 12.27 | 11.96 | 11.85 | |
| 12 1/8 x 12 1/8 x 13 9/16" | ECT-51 Double Wall Corrugated | 10/160 | 7.86 | 7.67 | 7.48 | 7.29 | 7.23 | |
| 12 1/4 x 9 1/4 x 6" | ECT-32 Single Wall Corrugated | 25/900 | 1.24 | 1.21 | 1.18 | 1.15 | 1.14 | |
| 12 1/4 x 9 1/4 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.13 | 1.11 | 1.08 | 1.05 | 1.04 | |
| 12 1/4 x 9 1/4 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 1.12 | 1.10 | 1.07 | 1.04 | 1.03 | |
| 12 1/4 x 9 1/4 x 12" | 10,8,6" | 25/500 | 1.25 | 1.22 | 1.19 | 1.16 | 1.15 | |
| 12 1/4 x 12 1/4 x 12 3/4" | ECT-44 Single Wall Corrugated | 20/480 | 8.60 | 8.39 | 8.18 | 7.97 | 7.90 | |
| 12 5/16 x 12 5/16 x 40" | Printed Outer Lamp Box HSC | 15/120 | 3.42 | 3.33 | 3.25 | 3.17 | 3.14 | |
| 12 1/2 x 3 x 17 1/2" | FOL Self Seal White | 25/875 | 4.51 | 4.40 | 4.29 | 4.18 | 4.14 | |
| 12 1/2 x 4 1/2 x 48" | Outer Telescopic HSC | 15/180 | 6.06 | 5.91 | 5.77 | 5.62 | 5.57 | |
| 12 1/2 x 12 1/2 x 6" | ECT-32 Single Wall Corrugated | 25/500 | 1.13 | 1.10 | 1.07 | 1.05 | 1.04 | |
| 12 1/2 x 12 1/2 x 6" | 4,2" | 25/500 | 1.34 | 1.30 | 1.27 | 1.24 | 1.23 | |
| 12 1/2 x 12 1/2 x 12" | ECT-32 Single Wall Corrugated | 25/250 | 1.48 | 1.44 | 1.40 | 1.37 | 1.36 | |
| 12 1/2 x 12 1/2 x 12" | 10,8,6" | 25/250 | 1.75 | 1.71 | 1.67 | 1.63 | 1.61 | |
| 12 1/2 x 12 1/2 x 15" | ECT-48 Double Wall Corrugated | 15/150 | 2.72 | 2.66 | 2.59 | 2.52 | 2.50 | |
| 12 1/2 x 12 1/2 x 15 1/8" | ECT-48 Double Wall Corrugated | 10/160 | 8.12 | 7.93 | 7.73 | 7.53 | 7.47 | |
| 12 1/2 x 12 1/2 x 48" | Outside Telescopic HSC | 15/120 | 6.39 | 6.23 | 6.08 | 5.92 | 5.87 | |
| 12 1/2 x 12 1/2 x 72" | Outside Telescopic HSC | 15/90 | 13.60 | 13.27 | 12.95 | 12.62 | 12.51 | |
| 12 3/4 x 6 3/8 x 13 1/2" | Holds 4 - 6 x 6 x 6" Boxes | 25/500 | 1.00 | .97 | .95 | .93 | .92 | |
| 12 3/4 x 12 3/4 x 13 1/2" | Holds 8 - 6 x 6 x 6" Boxes | 25/250 | 1.79 | 1.74 | 1.70 | 1.66 | 1.64 | |
| 13 x 3 x 3" | ECT-32 Single Wall Corrugated | 25/1800 | .79 | .77 | .75 | .73 | .73 | |
| 13 x 3 x 30" | FOL | 25/375 | 3.57 | 3.48 | 3.39 | 3.31 | 3.28 | |
| 13 x 7 x 7" | ECT-32 Single Wall Corrugated | 25/500 | .81 | .80 | .78 | .76 | .75 | |
| 13 x 8 x 6" | ECT-32 Single Wall Corrugated | 25/900 | 1.36 | 1.33 | 1.29 | 1.26 | 1.25 | |
| 13 x 8 x 8" | ECT-32 Single Wall Corrugated | 25/500 | .94 | .92 | .90 | .87 | .87 | |
| 13 x 9 x 4" | ECT-32 Single Wall Corrugated | 25/900 | 1.27 | 1.24 | 1.21 | 1.18 | 1.17 | |
| 13 x 9 x 6" | ECT-32 Single Wall Corrugated | 25/500 | .87 | .85 | .83 | .81 | .80 | |
| 13 x 9 x 7" | ECT-32 Single Wall Corrugated | 25/500 | .93 | .91 | .88 | .86 | .85 | |
| 13 x 9 x 8" | ECT-32 Single Wall Corrugated | 25/500 | 1.53 | 1.49 | 1.45 | 1.42 | 1.40 | |
| 13 x 9 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.00 | .98 | .95 | .93 | .92 | |
| 13 x 9 x 11" | ECT-32 Single Wall Corrugated | 25/500 | 1.08 | 1.05 | 1.03 | 1.00 | .99 | |
| 13 x 10 x 2" | ECT-32 Single Wall Corrugated | 25/500 | 1.51 | 1.47 | 1.43 | 1.40 | 1.39 | |
| 13 x 10 x 4" | ECT-32 Single Wall Corrugated | 25/500 | .81 | .79 | .77 | .75 | .74 | |
| 13 x 10 x 5" | ECT-32 Single Wall Corrugated | 25/500 | .92 | .89 | .87 | .85 | .84 | |
| 13 x 10 x 6" | ECT-32 Single Wall Corrugated | 25/500 | .96 | .94 | .91 | .89 | .88 | |
| 13 x 10 x 7" | ECT-32 Single Wall Corrugated | 25/500 | .99 | .97 | .94 | .92 | .91 | |
| 13 x 10 x 8" | ECT-32 Single Wall Corrugated | 25/500 | 1.02 | 1.00 | .97 | .95 | .94 | |
| 13 x 10 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.07 | 1.04 | 1.02 | .99 | .98 | |
| 13 x 10 x 10" | ECT-32 Single Wall Corrugated | 25/500 | 1.05 | 1.03 | 1.00 | .97 | .97 | |
| 13 x 10 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 1.99 | 1.94 | 1.90 | 1.85 | 1.83 | |
| 13 x 10 x 13" | ECT-32 Single Wall Corrugated | 25/500 | 1.79 | 1.74 | 1.70 | 1.66 | 1.64 | |
| 13 x 10 x 15" | ECT-32 Single Wall Corrugated | 25/500 | 2.27 | 2.22 | 2.16 | 2.11 | 2.09 | |
| 13 x 11 x 2" | ECT-32 Single Wall Corrugated | 25/900 | 1.45 | 1.42 | 1.38 | 1.35 | 1.34 | |
| 13 x 11 x 5" | ECT-32 Single Wall Corrugated | 25/500 | .97 | .95 | .93 | .90 | .90 | |
| 13 x 11 x 6" | ECT-32 Single Wall Corrugated | 25/500 | .99 | .97 | .94 | .92 | .91 | |
| 13 x 11 x 7" | ECT-32 Single Wall Corrugated | 25/500 | 1.11 | 1.08 | 1.06 | 1.03 | 1.02 | |
| 13 x 11 x 8" | ECT-32 Single Wall Corrugated | 25/500 | 1.12 | 1.09 | 1.06 | 1.04 | 1.03 | |
| 13 x 11 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.17 | 1.14 | 1.11 | 1.08 | 1.07 | |
| 13 x 11 x 11" | ECT-32 Single Wall Corrugated | 25/500 | 1.31 | 1.28 | 1.25 | 1.22 | 1.21 | |
| 13 x 13 x 2" | ECT-32 Single Wall Corrugated | 25/500 | 1.81 | 1.77 | 1.73 | 1.68 | 1.67 | |
| 13 x 13 x 3" | ECT-32 Single Wall Corrugated | 25/500 | 1.63 | 1.59 | 1.55 | 1.51 | 1.50 | |
| 13 x 13 x 4" | ECT-32 Single Wall Corrugated | 25/250 | 1.04 | 1.01 | .99 | .96 | .95 | |
| 13 x 13 x 5" | ECT-32 Single Wall Corrugated | 25/500 | 1.21 | 1.18 | 1.15 | 1.12 | 1.11 | |
| 13 x 13 x 6" | ECT-32 Single Wall Corrugated | 25/500 | 1.20 | 1.17 | 1.14 | 1.11 | 1.10 | |
| 13 x 13 x 7" | ECT-32 Single Wall Corrugated | 25/500 | 1.27 | 1.24 | 1.21 | 1.18 | 1.17 | |
| 13 x 13 x 8" | ECT-32 Single Wall Corrugated | 25/500 | 1.37 | 1.34 | 1.30 | 1.27 | 1.26 | |
| 13 x 13 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.38 | 1.35 | 1.32 | 1.28 | 1.27 | |
| 13 x 13 x 10" | ECT-32 Single Wall Corrugated | 25/500 | 1.46 | 1.42 | 1.39 | 1.35 | 1.34 | |
| 13 x 13 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 2.08 | 2.03 | 1.98 | 1.93 | 1.91 | |
| 13 x 13 x 13" | ECT-32 Single Wall Corrugated | 25/500 | 1.43 | 1.40 | 1.36 | 1.33 | 1.32 | |
| 13 x 13 x 13" | 11,9,7" | 25/500 | 1.61 | 1.57 | 1.53 | 1.50 | 1.48 | |
| 13 x 13 x 13" | ECT-44 Single Wall Corrugated | 25/500 | 3.76 | 3.67 | 3.58 | 3.49 | 3.45 | |
| 13 x 13 x 13" | ECT-48 Double Wall Corrugated | 15/180 | 2.72 | 2.65 | 2.58 | 2.52 | 2.50 | |
| 13 x 13 x 15" | ECT-32 Single Wall Corrugated | 25/250 | 1.98 | 1.94 | 1.89 | 1.84 | 1.82 | |
| 13 x 13 x 17" | ECT-32 Single Wall Corrugated | 25/250 | 2.67 | 2.61 | 2.54 | 2.48 | 2.45 | |
| 13 1/4 x 10 1/4 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.12 | 1.09 | 1.06 | 1.04 | 1.03 | |
| 13 1/4 x 10 1/4 x 12" | 10,8,6" | 25/300 | 1.45 | 1.41 | 1.38 | 1.34 | 1.33 | |
| 13 1/2 x 13 1/2 x 7 1/2" | ECT-32 Single Wall Corrugated | 25/500 | 1.38 | 1.35 | 1.31 | 1.28 | 1.27 | |
| 13 3/4 x 9 x 10 3/8" | ECT-51 Double Wall Corrugated | 20/160 | 11.93 | 11.65 | 11.36 | 11.07 | 10.97 | |
| 13 3/4 x 10 1/4 x 9 1/8" | ECT-32 Single Wall Corrugated | 25/500 | 1.10 | 1.07 | 1.04 | 1.02 | 1.01 | |