| 12 x 3 x 3" | ECT-32 Single Wall Corrugated | 25/1800 | $.88 | $.82 | $.79 | $.76 | $.73 | |
| 12 x 4 x 4" | ECT-32 Single Wall Corrugated | 25/900 | .62 | .58 | .56 | .54 | .51 | |
| 12 x 4 x 48" | Inside Telescopic HSC | 15/180 | 6.50 | 6.05 | 5.83 | 5.60 | 5.38 | |
| 12 x 5 x 4" | ECT-32 Single Wall Corrugated | 25/1500 | .61 | .57 | .55 | .53 | .51 | |
| 12 x 5 x 5" | ECT-32 Single Wall Corrugated | 25/1000 | .62 | .58 | .56 | .54 | .52 | |
| 12 x 6 x 2" | ECT-32 Single Wall Corrugated | 25/1500 | 1.01 | .94 | .91 | .87 | .84 | |
| 12 x 6 x 3" | ECT-32 Single Wall Corrugated | 25/1250 | .64 | .60 | .57 | .55 | .53 | |
| 12 x 6 x 4" | ECT-32 Single Wall Corrugated | 25/1000 | .64 | .60 | .57 | .55 | .53 | |
| 12 x 6 x 5" | ECT-32 Single Wall Corrugated | 25/1000 | .71 | .66 | .64 | .62 | .59 | |
| 12 x 6 x 6" | ECT-32 Single Wall Corrugated | 25/1000 | .74 | .69 | .66 | .64 | .61 | |
| 12 x 6 x 6" | 4,2" | 25/750 | .83 | .77 | .74 | .72 | .69 | |
| 12 x 6 x 6" | ECT-44 Single Wall Corrugated | 25/500 | 1.06 | .98 | .95 | .91 | .87 | |
| 12 x 6 x 8" | ECT-32 Single Wall Corrugated | 25/750 | .93 | .87 | .84 | .81 | .77 | |
| 12 x 6 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 1.02 | .95 | .92 | .88 | .85 | |
| 12 x 6 x 12 3/4" | ECT-44 Single Wall Corrugated | 20/560 | 6.87 | 6.40 | 6.16 | 5.92 | 5.69 | |
| 12 x 7 x 5" | ECT-32 Single Wall Corrugated | 25/900 | 1.06 | .99 | .95 | .92 | .88 | |
| 12 x 7 x 7" | ECT-32 Single Wall Corrugated | 25/900 | 1.11 | 1.04 | 1.00 | .96 | .92 | |
| 12 x 8 x 3" | ECT-32 Single Wall Corrugated | 25/1000 | 1.10 | 1.03 | .99 | .95 | .91 | |
| 12 x 8 x 4" | ECT-32 Single Wall Corrugated | 25/750 | .83 | .78 | .75 | .72 | .69 | |
| 12 x 8 x 5" | ECT-32 Single Wall Corrugated | 25/750 | .93 | .86 | .83 | .80 | .77 | |
| 12 x 8 x 6" | ECT-32 Single Wall Corrugated | 25/750 | .83 | .78 | .75 | .72 | .69 | |
| 12 x 8 x 6" | ECT-48 Double Wall Corrugated | 15/300 | 2.34 | 2.18 | 2.09 | 2.01 | 1.93 | |
| 12 x 8 x 7" | ECT-32 Single Wall Corrugated | 25/500 | .90 | .84 | .81 | .78 | .75 | |
| 12 x 8 x 8" | ECT-32 Single Wall Corrugated | 25/500 | .88 | .82 | .79 | .76 | .73 | |
| 12 x 8 x 8" | White | 25/900 | 1.39 | 1.30 | 1.25 | 1.20 | 1.15 | |
| 12 x 8 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 1.61 | 1.50 | 1.44 | 1.38 | 1.33 | |
| 12 x 9 x 2" | ECT-32 Single Wall Corrugated | 25/900 | 1.08 | 1.00 | .97 | .93 | .89 | |
| 12 x 9 x 3" | ECT-32 Single Wall Corrugated | 25/750 | .68 | .63 | .61 | .59 | .56 | |
| 12 x 9 x 4" | ECT-32 Single Wall Corrugated | 25/500 | .89 | .83 | .80 | .77 | .74 | |
| 12 x 9 x 4" | White | 25/500 | 1.05 | .98 | .94 | .90 | .87 | |
| 12 x 9 x 5" | ECT-32 Single Wall Corrugated | 25/500 | .86 | .80 | .77 | .74 | .71 | |
| 12 x 9 x 6" | ECT-32 Single Wall Corrugated | 25/500 | .81 | .76 | .73 | .70 | .67 | |
| 12 x 9 x 6" | 4,2" | 25/500 | 1.11 | 1.04 | 1.00 | .96 | .92 | |
| 12 x 9 x 6" | ECT-48 Double Wall Corrugated | 15/450 | 2.57 | 2.40 | 2.31 | 2.22 | 2.13 | |
| 12 x 9 x 7" | ECT-32 Single Wall Corrugated | 25/500 | 1.02 | .95 | .91 | .88 | .84 | |
| 12 x 9 x 8" | ECT-32 Single Wall Corrugated | 25/500 | 1.08 | 1.00 | .97 | .93 | .89 | |
| 12 x 9 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.08 | 1.00 | .97 | .93 | .89 | |
| 12 x 9 x 9" | ECT-48 Double Wall Corrugated | 15/300 | 3.11 | 2.89 | 2.79 | 2.68 | 2.57 | |
| 12 x 9 x 10" | ECT-32 Single Wall Corrugated | 25/500 | 1.19 | 1.11 | 1.07 | 1.02 | .98 | |
| 12 x 9 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 1.27 | 1.19 | 1.14 | 1.10 | 1.05 | |
| 12 x 10 x 2" | ECT-32 Single Wall Corrugated | 25/900 | 1.60 | 1.49 | 1.44 | 1.38 | 1.33 | |
| 12 x 10 x 3" | ECT-32 Single Wall Corrugated | 25/500 | .93 | .87 | .84 | .80 | .77 | |
| 12 x 10 x 4" | ECT-32 Single Wall Corrugated | 25/750 | .91 | .85 | .82 | .79 | .76 | |
| 12 x 10 x 4" | 2" | 25/750 | .92 | .85 | .82 | .79 | .76 | |
| 12 x 10 x 4" | ECT-44 Single Wall Corrugated | 25/750 | 2.14 | 1.99 | 1.92 | 1.84 | 1.77 | |
| 12 x 10 x 5" | ECT-32 Single Wall Corrugated | 25/500 | 1.00 | .93 | .90 | .86 | .83 | |
| 12 x 10 x 6" | ECT-32 Single Wall Corrugated | 25/500 | 1.01 | .94 | .91 | .87 | .84 | |
| 12 x 10 x 6" | 4,2" | 25/500 | 1.37 | 1.27 | 1.23 | 1.18 | 1.13 | |
| 12 x 10 x 6" | White | 25/500 | 1.23 | 1.15 | 1.10 | 1.06 | 1.02 | |
| 12 x 10 x 6" | ECT-44 Single Wall Corrugated | 25/500 | 1.45 | 1.35 | 1.30 | 1.25 | 1.20 | |
| 12 x 10 x 7" | ECT-32 Single Wall Corrugated | 25/500 | 1.12 | 1.04 | 1.00 | .96 | .92 | |
| 12 x 10 x 8" | ECT-32 Single Wall Corrugated | 25/500 | 1.10 | 1.03 | .99 | .95 | .91 | |
| 12 x 10 x 8" | 6,4" | 25/500 | 1.21 | 1.12 | 1.08 | 1.04 | 1.00 | |
| 12 x 10 x 8" | White | 25/500 | 1.42 | 1.32 | 1.27 | 1.22 | 1.17 | |
| 12 x 10 x 8" | ECT-44 Single Wall Corrugated | 25/500 | 1.74 | 1.62 | 1.56 | 1.50 | 1.44 | |
| 12 x 10 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.21 | 1.13 | 1.08 | 1.04 | 1.00 | |
| 12 x 10 x 10" | ECT-32 Single Wall Corrugated | 25/500 | 1.12 | 1.04 | 1.01 | .97 | .93 | |
| 12 x 10 x 10" | White | 25/500 | 1.57 | 1.47 | 1.41 | 1.36 | 1.30 | |
| 12 x 10 x 10" | ECT-48 Double Wall Corrugated | 15/300 | 3.53 | 3.28 | 3.16 | 3.04 | 2.92 | |
| 12 x 10 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 1.53 | 1.43 | 1.37 | 1.32 | 1.27 | |
| 12 x 10 x 14" | ECT-32 Single Wall Corrugated | 25/500 | 2.42 | 2.25 | 2.17 | 2.09 | 2.00 | |
| 12 x 11 x 6" | ECT-32 Single Wall Corrugated | 25/500 | 1.15 | 1.07 | 1.03 | .99 | .95 | |
| 12 x 12 x 2" | ECT-32 Single Wall Corrugated | 25/500 | 1.85 | 1.72 | 1.66 | 1.60 | 1.53 | |
| 12 x 12 x 3" | ECT-32 Single Wall Corrugated | 25/500 | 1.06 | .99 | .95 | .92 | .88 | |
| 12 x 12 x 4" | ECT-32 Single Wall Corrugated | 25/500 | 1.08 | 1.00 | .97 | .93 | .89 | |
| 12 x 12 x 4" | 2" | 25/500 | 1.31 | 1.22 | 1.18 | 1.13 | 1.08 | |
| 12 x 12 x 4" | White | 25/500 | 2.03 | 1.89 | 1.82 | 1.75 | 1.68 | |
| 12 x 12 x 5" | ECT-32 Single Wall Corrugated | 25/500 | 1.18 | 1.10 | 1.06 | 1.02 | .98 | |
| 12 x 12 x 6" | ECT-32 Single Wall Corrugated | 25/500 | 1.11 | 1.03 | .99 | .95 | .92 | |
| 12 x 12 x 6" | 4" | 25/500 | 1.23 | 1.15 | 1.11 | 1.06 | 1.02 | |
| 12 x 12 x 6" | White | 25/500 | 1.60 | 1.49 | 1.43 | 1.38 | 1.32 | |
| 12 x 12 x 6" | ECT-44 Single Wall Corrugated | 25/500 | 1.61 | 1.50 | 1.45 | 1.39 | 1.34 | |
| 12 x 12 x 6" | ECT-48 Double Wall Corrugated | 15/300 | 2.09 | 1.95 | 1.88 | 1.80 | 1.73 | |
| 12 x 12 x 7" | ECT-32 Single Wall Corrugated | 25/500 | 1.25 | 1.16 | 1.12 | 1.08 | 1.03 | |
| 12 x 12 x 8" | ECT-32 Single Wall Corrugated | 25/500 | 1.23 | 1.15 | 1.11 | 1.06 | 1.02 | |
| 12 x 12 x 8" | 6,4" | 25/500 | 1.80 | 1.67 | 1.61 | 1.55 | 1.49 | |
| 12 x 12 x 8" | White | 25/500 | 1.98 | 1.84 | 1.78 | 1.71 | 1.64 | |
| 12 x 12 x 8" | ECT-44 Single Wall Corrugated | 25/500 | 2.91 | 2.71 | 2.61 | 2.51 | 2.41 | |
| 12 x 12 x 8" | ECT-48 Double Wall Corrugated | 15/300 | 2.35 | 2.19 | 2.10 | 2.02 | 1.94 | |
| 12 x 12 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.42 | 1.33 | 1.28 | 1.23 | 1.18 | |
| 12 x 12 x 10" | ECT-32 Single Wall Corrugated | 25/500 | 1.33 | 1.24 | 1.20 | 1.15 | 1.10 | |
| 12 x 12 x 10" | 8,6,4" | 25/500 | 1.89 | 1.76 | 1.69 | 1.63 | 1.56 | |
| 12 x 12 x 10" | White | 25/500 | 2.23 | 2.08 | 2.00 | 1.93 | 1.85 | |
| 12 x 12 x 10" | ECT-44 Single Wall Corrugated | 25/500 | 3.12 | 2.90 | 2.80 | 2.69 | 2.58 | |
| 12 x 12 x 10" | ECT-48 Double Wall Corrugated | 15/150 | 2.52 | 2.35 | 2.26 | 2.17 | 2.09 | |
| 12 x 12 x 11" | ECT-32 Single Wall Corrugated | 25/500 | 1.57 | 1.46 | 1.40 | 1.35 | 1.30 | |
| 12 x 12 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 1.26 | 1.18 | 1.13 | 1.09 | 1.05 | |
| 12 x 12 x 12" | 10,8" | 25/500 | 1.48 | 1.38 | 1.33 | 1.28 | 1.23 | |
| 12 x 12 x 12" | White | 25/500 | 1.79 | 1.67 | 1.61 | 1.55 | 1.48 | |
| 12 x 12 x 12" | ECT-44 Single Wall Corrugated | 25/250 | 2.26 | 2.10 | 2.03 | 1.95 | 1.87 | |
| 12 x 12 x 12" | V3c - 350# Single Wall | 20/200 | 10.57 | 9.84 | 9.47 | 9.11 | 8.74 | |
| 12 x 12 x 12" | ECT-48 Double Wall Corrugated | 15/150 | 2.41 | 2.25 | 2.16 | 2.08 | 2.00 | |
| 12 x 12 x 12" | ECT-71 Double Wall Corrugated | 15/150 | 9.03 | 8.41 | 8.09 | 7.78 | 7.47 | |
| 12 x 12 x 12" | Printed Deluxe Packing Box | 25/500 | 2.34 | 2.18 | 2.09 | 2.01 | 1.93 | |
| 12 x 12 x 12" | ECT-90 Triple Wall Corrugated | 5/30 | 32.35 | 30.12 | 29.01 | 27.89 | 26.78 | |
| 12 x 12 x 13" | ECT-32 Corrugated | 25/300 | 1.77 | 1.65 | 1.59 | 1.53 | 1.47 | |
| 12 x 12 x 14" | ECT-32 Corrugated | 25/250 | 1.77 | 1.65 | 1.59 | 1.53 | 1.47 | |
| 12 x 12 x 15" | ECT-32 Corrugated | 25/250 | 1.86 | 1.73 | 1.67 | 1.60 | 1.54 | |
| 12 x 12 x 16" | ECT-32 Corrugated | 25/250 | 1.90 | 1.77 | 1.70 | 1.63 | 1.57 | |
| 12 x 12 x 16" | ECT-48 Double Wall Corrugated | 15/150 | 4.23 | 3.94 | 3.79 | 3.65 | 3.50 | |
| 12 x 12 x 18" | ECT-32 Single Wall Corrugated | 25/250 | 2.04 | 1.90 | 1.83 | 1.76 | 1.69 | |
| 12 x 12 x 18" | 16,14,12,10" | 25/500 | 2.08 | 1.93 | 1.86 | 1.79 | 1.72 | |
| 12 x 12 x 18" | ECT-48 Double Wall Corrugated | 15/150 | 5.63 | 5.24 | 5.05 | 4.86 | 4.66 | |
| 12 x 12 x 20" | ECT-32 Single Wall Corrugated | 25/250 | 2.16 | 2.01 | 1.94 | 1.86 | 1.79 | |
| 12 x 12 x 24" | 2 Cubic Feet | 25/250 | 2.45 | 2.28 | 2.20 | 2.11 | 2.03 | |
| 12 x 12 x 30" | ECT-32 Single Wall Corrugated | 15/240 | 2.87 | 2.67 | 2.57 | 2.47 | 2.37 | |
| 12 x 12 x 36" | 3 Cubic Feet | 15/240 | 3.53 | 3.29 | 3.16 | 3.04 | 2.92 | |
| 12 x 12 x 40" | ECT-32 Single Wall Corrugated | 15/120 | 3.75 | 3.49 | 3.36 | 3.23 | 3.10 | |
| 12 x 12 x 46" | Inner Lamp Box HSC | 15/120 | 4.38 | 4.08 | 3.93 | 3.78 | 3.63 | |
| 12 x 12 x 48" | ECT-32 Single Wall Corrugated | 15/120 | 6.02 | 5.61 | 5.40 | 5.19 | 4.99 | |
| 12 x 12 x 48" | ECT-48 Double Wall Corrugated | 10/90 | 11.31 | 10.53 | 10.14 | 9.75 | 9.36 | |
| 12 x 12 x 48" | Inside Telescopic HSC | 15/120 | 7.13 | 6.64 | 6.39 | 6.15 | 5.90 | |
| 12 x 12 x 52" | ECT-32 Single Wall Corrugated | 15/240 | 7.83 | 7.29 | 7.02 | 6.75 | 6.48 | |
| 12 x 12 x 60" | ECT-32 Single Wall Corrugated | 10/120 | 8.46 | 7.88 | 7.59 | 7.30 | 7.00 | |
| 12 x 12 x 72" | ECT-32 Single Wall Corrugated | 10/120 | 10.21 | 9.51 | 9.16 | 8.80 | 8.45 | |
| 12 x 12 x 72" | Inside Telescopic HSC | 15/90 | 15.08 | 14.04 | 13.52 | 13.00 | 12.48 | |
| 12 1/8 x 12 1/8 x 13 9/16" | ECT-51 Double Wall Corrugated | 10/160 | 9.19 | 8.56 | 8.24 | 7.92 | 7.61 | |
| 12 1/4 x 9 1/4 x 6" | ECT-32 Single Wall Corrugated | 25/900 | 1.45 | 1.35 | 1.30 | 1.25 | 1.20 | |
| 12 1/4 x 9 1/4 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.32 | 1.23 | 1.19 | 1.14 | 1.10 | |
| 12 1/4 x 9 1/4 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 1.31 | 1.22 | 1.18 | 1.13 | 1.09 | |
| 12 1/4 x 9 1/4 x 12" | 10,8,6" | 25/500 | 1.47 | 1.36 | 1.31 | 1.26 | 1.21 | |
| 12 1/4 x 12 1/4 x 12 3/4" | ECT-44 Single Wall Corrugated | 20/480 | 10.05 | 9.36 | 9.01 | 8.67 | 8.32 | |
| 12 5/16 x 12 5/16 x 40" | Printed Outer Lamp Box HSC | 15/120 | 4.00 | 3.72 | 3.58 | 3.45 | 3.31 | |
| 12 1/2 x 3 x 17 1/2" | FOL Self Seal White | 25/875 | 5.27 | 4.91 | 4.73 | 4.54 | 4.36 | |
| 12 1/2 x 4 1/2 x 48" | Outer Telescopic HSC | 15/180 | 7.09 | 6.60 | 6.35 | 6.11 | 5.86 | |
| 12 1/2 x 12 1/2 x 6" | ECT-32 Single Wall Corrugated | 25/500 | 1.32 | 1.23 | 1.18 | 1.14 | 1.09 | |
| 12 1/2 x 12 1/2 x 6" | 4,2" | 25/500 | 1.56 | 1.45 | 1.40 | 1.35 | 1.29 | |
| 12 1/2 x 12 1/2 x 12" | ECT-32 Single Wall Corrugated | 25/250 | 1.73 | 1.61 | 1.55 | 1.49 | 1.43 | |
| 12 1/2 x 12 1/2 x 12" | 10,8,6" | 25/250 | 2.05 | 1.91 | 1.84 | 1.77 | 1.70 | |
| 12 1/2 x 12 1/2 x 15" | ECT-48 Double Wall Corrugated | 15/150 | 3.18 | 2.96 | 2.85 | 2.74 | 2.63 | |
| 12 1/2 x 12 1/2 x 15 1/8" | ECT-48 Double Wall Corrugated | 10/160 | 9.50 | 8.84 | 8.52 | 8.19 | 7.86 | |
| 12 1/2 x 12 1/2 x 48" | Outside Telescopic HSC | 15/120 | 7.47 | 6.95 | 6.70 | 6.44 | 6.18 | |
| 12 1/2 x 12 1/2 x 72" | Outside Telescopic HSC | 15/90 | 15.91 | 14.81 | 14.26 | 13.71 | 13.17 | |
| 12 3/4 x 6 3/8 x 13 1/2" | Holds 4 - 6 x 6 x 6" Boxes | 25/500 | 1.17 | 1.09 | 1.05 | 1.01 | .97 | |
| 12 3/4 x 12 3/4 x 13 1/2" | Holds 8 - 6 x 6 x 6" Boxes | 25/250 | 2.09 | 1.95 | 1.87 | 1.80 | 1.73 | |
| 13 x 3 x 3" | ECT-32 Single Wall Corrugated | 25/1800 | .92 | .86 | .83 | .80 | .76 | |
| 13 x 3 x 30" | FOL | 25/375 | 4.17 | 3.88 | 3.74 | 3.59 | 3.45 | |
| 13 x 7 x 7" | ECT-32 Single Wall Corrugated | 25/500 | .95 | .89 | .85 | .82 | .79 | |
| 13 x 8 x 6" | ECT-32 Single Wall Corrugated | 25/900 | 1.59 | 1.48 | 1.43 | 1.37 | 1.32 | |
| 13 x 8 x 8" | ECT-32 Single Wall Corrugated | 25/500 | 1.05 | .97 | .94 | .90 | .87 | |
| 13 x 9 x 4" | ECT-32 Single Wall Corrugated | 25/900 | 1.49 | 1.39 | 1.33 | 1.28 | 1.23 | |
| 13 x 9 x 6" | ECT-32 Single Wall Corrugated | 25/500 | 1.02 | .95 | .91 | .88 | .84 | |
| 13 x 9 x 7" | ECT-32 Single Wall Corrugated | 25/500 | 1.09 | 1.01 | .97 | .94 | .90 | |
| 13 x 9 x 8" | ECT-32 Single Wall Corrugated | 25/500 | 1.79 | 1.66 | 1.60 | 1.54 | 1.48 | |
| 13 x 9 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.17 | 1.09 | 1.05 | 1.01 | .97 | |
| 13 x 9 x 11" | ECT-32 Single Wall Corrugated | 25/500 | 1.26 | 1.17 | 1.13 | 1.09 | 1.04 | |
| 13 x 10 x 2" | ECT-32 Single Wall Corrugated | 25/500 | 1.76 | 1.64 | 1.58 | 1.52 | 1.46 | |
| 13 x 10 x 4" | ECT-32 Single Wall Corrugated | 25/500 | .94 | .88 | .85 | .81 | .78 | |
| 13 x 10 x 5" | ECT-32 Single Wall Corrugated | 25/500 | 1.07 | 1.00 | .96 | .92 | .89 | |
| 13 x 10 x 6" | ECT-32 Single Wall Corrugated | 25/500 | 1.12 | 1.04 | 1.01 | .97 | .93 | |
| 13 x 10 x 7" | ECT-32 Single Wall Corrugated | 25/500 | 1.16 | 1.08 | 1.04 | 1.00 | .96 | |
| 13 x 10 x 8" | ECT-32 Single Wall Corrugated | 25/500 | 1.20 | 1.11 | 1.07 | 1.03 | .99 | |
| 13 x 10 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.25 | 1.16 | 1.12 | 1.08 | 1.03 | |
| 13 x 10 x 10" | ECT-32 Single Wall Corrugated | 25/500 | 1.30 | 1.21 | 1.17 | 1.12 | 1.08 | |
| 13 x 10 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 2.33 | 2.17 | 2.09 | 2.01 | 1.93 | |
| 13 x 10 x 13" | ECT-32 Single Wall Corrugated | 25/500 | 2.09 | 1.94 | 1.87 | 1.80 | 1.73 | |
| 13 x 10 x 15" | ECT-32 Single Wall Corrugated | 25/500 | 2.66 | 2.48 | 2.38 | 2.29 | 2.20 | |
| 13 x 11 x 2" | ECT-32 Single Wall Corrugated | 25/900 | 1.70 | 1.58 | 1.53 | 1.47 | 1.41 | |
| 13 x 11 x 5" | ECT-32 Single Wall Corrugated | 25/500 | 1.14 | 1.06 | 1.02 | .98 | .94 | |
| 13 x 11 x 6" | ECT-32 Single Wall Corrugated | 25/500 | 1.16 | 1.08 | 1.04 | 1.00 | .96 | |
| 13 x 11 x 7" | ECT-32 Single Wall Corrugated | 25/500 | 1.30 | 1.21 | 1.16 | 1.12 | 1.07 | |
| 13 x 11 x 8" | ECT-32 Single Wall Corrugated | 25/500 | 1.31 | 1.22 | 1.17 | 1.13 | 1.08 | |
| 13 x 11 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.37 | 1.27 | 1.23 | 1.18 | 1.13 | |
| 13 x 11 x 11" | ECT-32 Single Wall Corrugated | 25/500 | 1.53 | 1.43 | 1.37 | 1.32 | 1.27 | |
| 13 x 13 x 2" | ECT-32 Single Wall Corrugated | 25/500 | 2.12 | 1.98 | 1.90 | 1.83 | 1.76 | |
| 13 x 13 x 3" | ECT-32 Single Wall Corrugated | 25/500 | 1.91 | 1.78 | 1.71 | 1.65 | 1.58 | |
| 13 x 13 x 4" | ECT-32 Single Wall Corrugated | 25/250 | 1.08 | 1.01 | .97 | .94 | .90 | |
| 13 x 13 x 5" | ECT-32 Single Wall Corrugated | 25/500 | 1.41 | 1.32 | 1.27 | 1.22 | 1.17 | |
| 13 x 13 x 6" | ECT-32 Single Wall Corrugated | 25/500 | 1.40 | 1.31 | 1.26 | 1.21 | 1.16 | |
| 13 x 13 x 7" | ECT-32 Single Wall Corrugated | 25/500 | 1.49 | 1.39 | 1.33 | 1.28 | 1.23 | |
| 13 x 13 x 8" | ECT-32 Single Wall Corrugated | 25/500 | 1.44 | 1.34 | 1.29 | 1.24 | 1.19 | |
| 13 x 13 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.62 | 1.51 | 1.45 | 1.40 | 1.34 | |
| 13 x 13 x 10" | ECT-32 Single Wall Corrugated | 25/500 | 1.71 | 1.59 | 1.53 | 1.47 | 1.41 | |
| 13 x 13 x 12" | ECT-32 Single Wall Corrugated | 25/500 | 2.43 | 2.26 | 2.18 | 2.10 | 2.01 | |
| 13 x 13 x 13" | ECT-32 Single Wall Corrugated | 25/500 | 1.67 | 1.56 | 1.50 | 1.44 | 1.39 | |
| 13 x 13 x 13" | 11,9,7" | 25/500 | 1.89 | 1.76 | 1.69 | 1.63 | 1.56 | |
| 13 x 13 x 13" | ECT-44 Single Wall Corrugated | 25/500 | 4.39 | 4.09 | 3.94 | 3.79 | 3.64 | |
| 13 x 13 x 13" | ECT-48 Double Wall Corrugated | 15/180 | 3.17 | 2.96 | 2.85 | 2.74 | 2.63 | |
| 13 x 13 x 15" | ECT-32 Single Wall Corrugated | 25/250 | 2.32 | 2.16 | 2.08 | 2.00 | 1.92 | |
| 13 x 13 x 17" | ECT-32 Single Wall Corrugated | 25/250 | 3.12 | 2.91 | 2.80 | 2.69 | 2.58 | |
| 13 1/4 x 10 1/4 x 9" | ECT-32 Single Wall Corrugated | 25/500 | 1.31 | 1.22 | 1.17 | 1.13 | 1.08 | |
| 13 1/4 x 10 1/4 x 12" | 10,8,6" | 25/300 | 1.69 | 1.57 | 1.52 | 1.46 | 1.40 | |
| 13 1/2 x 13 1/2 x 7 1/2" | ECT-32 Single Wall Corrugated | 25/500 | 1.61 | 1.50 | 1.45 | 1.39 | 1.33 | |
| 13 3/4 x 9 x 10 3/8" | ECT-51 Double Wall Corrugated | 20/160 | 13.96 | 12.99 | 12.51 | 12.03 | 11.55 | |
| 13 3/4 x 10 1/4 x 9 1/8" | ECT-32 Single Wall Corrugated | 25/500 | 1.28 | 1.19 | 1.15 | 1.11 | 1.06 | |