Heavy Duty and Double Wall Shipping Boxes

Heavy duty shipping boxes in bundle quantities: ECT-48 double wall kraft, ECT-44 single wall, and ECT-51 double wall for hazmat cartons and bulk cargo boxes. Double wall boxes come 15 to a bundle up to about 16 inches, then 10 or 5. The tables show the price per box for common sizes.

ECT-48 double wall, price per box

ECT-48 double wall boxes by size
Size (in)ECTBoxes per bundlePrice per bundlePrice per box
6 x 6 x 648 15 $20.21 $1.35
8 x 8 x 848 15 $19.37 $1.29
10 x 8 x 648 15 $31.90 $2.13
10 x 10 x 1048 15 $27.33 $1.82
12 x 8 x 648 15 $34.64 $2.31
12 x 9 x 648 15 $38.14 $2.54
12 x 12 x 648 15 $31.02 $2.07
12 x 12 x 848 15 $34.80 $2.32
12 x 12 x 1248 15 $35.77 $2.38
14 x 10 x 848 15 $51.89 $3.46
14 x 14 x 1448 15 $48.46 $3.23
16 x 12 x 848 15 $58.64 $3.91
16 x 12 x 1248 15 $46.21 $3.08
16 x 16 x 1648 15 $67.96 $4.53
18 x 12 x 1248 15 $45.51 $3.03
18 x 18 x 1248 10 $46.08 $4.61
18 x 18 x 1848 10 $54.80 $5.48
20 x 20 x 1248 10 $56.89 $5.69
20 x 20 x 2048 10 $65.22 $6.52
24 x 12 x 1248 15 $53.44 $3.56
24 x 18 x 1848 10 $68.69 $6.87
24 x 24 x 2448 10 $102.89 $10.29
36 x 24 x 1248 5 $57.98 $11.60

Price per box is the bundle price divided by the bundle count. Bundles ship flat.

ECT-44 single wall, price per box

ECT-44 heavy duty single wall boxes by size
Size (in)ECTBoxes per bundlePrice per bundlePrice per box
6 x 6 x 644 25 $18.87 75.5¢
8 x 8 x 844 25 $28.71 $1.15
9 x 9 x 944 25 $53.30 $2.13
10 x 8 x 644 25 $43.22 $1.73
10 x 10 x 1044 25 $38.15 $1.53
12 x 6 x 644 25 $26.09 $1.04
12 x 10 x 644 25 $35.84 $1.43
12 x 10 x 844 25 $42.96 $1.72
12 x 12 x 644 25 $39.89 $1.60
12 x 12 x 844 25 $70.63 $2.83
12 x 12 x 1044 25 $75.61 $3.02
12 x 12 x 1244 25 $55.81 $2.23
14 x 10 x 1044 25 $78.95 $3.16
14 x 12 x 1044 25 $53.40 $2.14
15 x 12 x 1044 25 $88.99 $3.56
16 x 12 x 844 25 $52.44 $2.10
16 x 12 x 1044 25 $105.96 $4.24
17.25 x 11.25 x 644 25 $45.95 $1.84
17.25 x 11.25 x 844 25 $50.97 $2.04
17.25 x 11.25 x 1044 25 $52.92 $2.12

ECT-44 is a heavier single wall board, 25 to a bundle. It costs less per box than double wall and takes less space in the stockroom.

Which grade to use

ECT is the edge crush test rating of the board in pounds per inch. Each listing states its ECT grade; the listings do not state a contents weight limit, because that depends on the item, the packing and the stack. Use ECT-44 single wall when a standard ECT-32 box crushes at the corners or under a stack. Use ECT-48 double wall for dense or sharp parts, pallet stacking and long boxes. ECT-51 double wall covers the hazmat cartons and the bulk cargo boxes. Standard ECT-32 boxes are in shipping boxes in bulk.

Buying in bulk

For 10 or more bundles, a pallet quantity of one size, or a repeat order, request a bulk quote with the SKU, the number of boxes or bundles and your delivery ZIP. Pallet quantities ship by freight and the quote covers the boxes and the delivery in one price.

Common questions

What is the difference between ECT-44 and double wall?

ECT-44 is a single layer of heavier fluted board. Double wall has two layers of flute between three liners, which gives a thicker, stiffer box. Both are kraft and ship flat.

Do these boxes have a weight rating?

The listings state the ECT board grade only. ECT rates the edge crush strength of the board, not the weight the box will carry.

How many boxes come in a bundle?

Double wall boxes come 15 to a bundle in the smaller sizes, then 10, then 5 for the largest. ECT-44 single wall boxes come 25 to a bundle.

Are there boxes with hand holes?

Yes. The 20 x 18 x 12 and 24 x 24 x 12 double wall boxes come with hand holes and are in the grid below.

Related collections

IN STOCK 24x8x57 Double Wall Telescoping Inner Boxes
Boxes - Corrugated

24x8x57 Double Wall Telescoping Inner Boxes

PN: T24857INDW

24 x 8 x 57 in 5 PER BUNDLE
$99.03 / EACH
IN STOCK 24x24x12 Double Wall Boxes 10-Pack
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24x24x12 Double Wall Boxes 10-Pack

PN: HD242412DW

24 x 24 x 12 in 10 PER PACK
$75.83 / EACH
IN STOCK 20x20x8 Double Wall Boxes 10/Bundle
Boxes - Corrugated

20x20x8 Double Wall Boxes 10/Bundle

PN: HD20208DW

20 x 20 x 8 in 10 PER BUNDLE
$84.51 / EACH
IN STOCK Heavy-duty ECT-44 kraft corrugated Gaylord lids designed for maximum load protection and shipping compliance. Dimensions: 49.25" x 41.25" x 4" | Bundle of 5 flat-packed lids | Compatible with GAYLORDTW and GL484048TW containers.
Boxes - Corrugated

49.25x41.25x4 ECT-44 Heavy-Duty Gaylord Lids 5-Pack

PN: GL4840LID

49 1/4 x 41.25 x 4 in ECT-44 Single Wall Corrugated 5 PER BUNDLE
$40.55 / BUNDLE
IN STOCK Heavy-duty ECT-44 kraft corrugated Gaylord lids sized 49.25" x 25.25" x 4" for maximum load protection. Ships flat in bundles of 5 for cost-efficient bulk storage and shipping operations. Engineered for compatibility with standard Gaylord containers and built to withstand rigorous warehouse handling.
Boxes - Corrugated

49.25x25.25x4 ECT-44 Kraft Heavy-Duty Gaylord Lids 5-Pack

PN: GL4824LID

49 1/4 x 25.25 x 4 in ECT-44 Single Wall Corrugated 5 PER BUNDLE
$33.07 / BUNDLE
IN STOCK Industrial-grade Gaylord lids measuring 41.25" x 31.25" x 4" manufactured from ECT-44 kraft corrugated for maximum durability and cost efficiency. Bundle of 5 unassembled lids designed to pair with GL403030TW Gaylord containers. Simple assembly with tape, glue, or staples–ready to protect and seal your bulk shipments.
Boxes - Corrugated

41.25x31.25x4 ECT-44 Kraft Heavy-Duty Corrugated Gaylord Lids 5-Pack

PN: GL4030LID

41 1/4 x 31.25 x 4 in ECT-44 Single Wall Corrugated 5 PER BUNDLE
$39.91 / BUNDLE
IN STOCK 8.5x8.5x9.3" UN-Approved Haz Mat Paint Can Foam Shipper Kit - ECT-44 Corrugated
Boxes - Corrugated

8 1/2x8 1/2x9 5/16 ECT-44 Corrugated Foam Shipper Boxes

PN: HAZFS1G

8 1/2 x 8 1/2 x 9 5/16 in ECT-44 Single Wall Corrugated 1 EACH
$20.84 / EACH
IN STOCK Ship solvents, paint, and thinners safely with this UN/DOT-approved hazmat F-style can shipper kit. Complete pre-assembled corrugated carton includes ECT-44 single-wall construction, protective foam inserts, and 1-gallon F-style can with cap. Industry-standard protection accepted by all major freight carriers.
Boxes - Corrugated

8 3/16x5 11/16x12 3/8 ECT-44 Hazmat F-Style Can Shipper Kit

PN: HAZ1120

8 3/16 x 5 11/16 x 12 3/8 in ECT-44 Single Wall Corrugated 1 EACH
$22.65 / EACH
IN STOCK Heavy-duty double wall gaylord lids engineered for maximum load protection and shipping compliance. These 48¾x24¾x5" kraft corrugated lids feature ECT-48 strength rating and arrive flat for cost-effective storage and assembly. Sold in bundles of 5–the industry standard for bulk containerization.
Boxes - Corrugated

48 3/4 x 24 3/4 x 5 in ECT-48 Kraft Double Wall Gaylord Lids 5/Bundle

PN: GL4824LIDHD

48 3/4 x 24 3/4 x 5 in ECT-48 Double Wall Corrugated 5 PER BUNDLE
$25.37 / BUNDLE
IN STOCK Heavy-duty 48x60 double wall corrugated sheets with ECT-48 kraft construction deliver superior stacking strength and forklift impact protection. These stackable cardboard layer pads prevent product damage during warehousing and shipment. Bundle of 5 sheets per order–trusted by warehouse managers and fulfillment directors.
Boxes - Corrugated

48x60 ECT-48 Kraft Double Wall Corrugated Sheets 5-Pack

PN: SP4860DW

48 x 60 in ECT-48 Double Wall Corrugated 5 PER BUNDLE
$37.98 / BUNDLE
IN STOCK Heavy-duty 48x48" double wall corrugated sheets engineered for maximum stacking performance and freight protection. ECT-48 kraft material resists forklift puncture and compression on high-load pallets. Five-sheet bundle reduces per-unit costs and keeps your warehouse running efficiently.
Boxes - Corrugated

48x48 ECT-48 Double Wall Corrugated Sheets 5-Pack

PN: SP4848DW

48 x 48 in ECT-48 Double Wall Corrugated 5 PER BUNDLE
$30.84 / BUNDLE
IN STOCK Industrial-grade 42x48 double wall corrugated sheets with ECT-48 rating for maximum stacking strength and load protection. Each bundle includes 5 kraft corrugated pallet pads designed to prevent product shifting and forklift damage during storage and transport. Ideal for warehouse managers and fulfillment directors seeking reliable, cost-effective layering solutions.
Boxes - Corrugated

42x48 ECT-48 Double Wall Corrugated Sheets 5-Pack

PN: SP4248DW

42 x 48 in ECT-48 Double Wall Corrugated 5 PER BUNDLE
$20.12 / BUNDLE
IN STOCK Heavy-duty 40x60" double wall corrugated sheets (ECT-48) engineered for maximum stack strength and impact resistance. Protect high-value pallets from forklift damage while improving warehouse density. Bundle of 5 sheets–ideal for bulk operations and freight cost reduction.
Boxes - Corrugated

40x60 ECT-48 Double Wall Corrugated Sheets 5-Pack

PN: SP4060DW

40 x 60 in ECT-48 Double Wall Corrugated 5 PER BUNDLE
$24.38 / BUNDLE
IN STOCK Engineered ECT-44 single-wall corrugated hazmat shipping boxes designed for 1-quart paint cans. Pre-printed with CFR 49 178.601B compliance markings and directional arrows. Ship flat to maximize freight efficiency and cut storage overhead by 40%–25 boxes per bundle.
Boxes - Corrugated

5 1/8x5 1/8x6 3/16 ECT-44 Hazmat Paint Can Boxes

PN: HAZ1041

5 1/8 x 5 1/8 x 6 3/16 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$136.89 / BUNDLE
IN STOCK Engineered for high-performance warehouse operations: these ECT-44 single wall kraft corrugated boxes deliver 40% greater stacking strength than standard shipping containers. At 6" x 6" x 6", they maximize cube utilization while minimizing freight costs. Sold flat in bundles of 25 for efficient storage and rapid deployment.
Boxes - Corrugated

6x6x6 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 25-Pack

PN: HD666

6 x 6 x 6 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$18.87 / BUNDLE
IN STOCK Engineered for maximum protection and stacking performance, these 6x6x6 double wall corrugated boxes feature ECT-48 kraft construction that delivers exceptional crush resistance and durability. Bundle of 15 ships flat, reducing storage footprint and freight costs for your operation.
Boxes - Corrugated

6x6x6 ECT-48 Kraft Heavy-Duty Corrugated Double Wall Shipping Boxes 15-Pack

PN: HD666DW

6 x 6 x 6 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$20.21 / BUNDLE
IN STOCK Reliable ECT-44 single-wall corrugated hazmat boxes designed to safely ship 2 one-quart containers per unit. Pre-printed with mandatory warning labels and directional arrows. Bulk bundle of 25 units reduces per-unit cost and ensures regulatory compliance for hazardous material transport.
Boxes - Corrugated

9.5x4.625x5 ECT-44 Hazmat Shipping Box 25-Pack

PN: HAZCO2Q

9 1/2 x 4.625 x 5 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$111.07 / BUNDLE
IN STOCK Heavy-duty 7x7x7 double wall corrugated shipping boxes with ECT-48 rating for maximum stacking performance and freight efficiency. Ships flat to reduce storage footprint and handling costs. Bundle of 15 kraft boxes per unit–the industry standard for mid-sized shipments.
Boxes - Corrugated

7x7x7 ECT-48 Kraft Double Wall Corrugated Shipping Boxes 15-Pack

PN: HD777DW

7 x 7 x 7 in D.W./ECT-48 Corrugated 15 PER BUNDLE
$25.87 / BUNDLE
IN STOCK UN 4G/Y7.4/S certified haz mat boxes designed for safe 1-gallon liquid shipment. Single-wall ECT-44 kraft corrugated with pre-printed hazard warnings and directional arrows. Bundle of 20 cartons ships flat for maximum warehouse efficiency.
Boxes - Corrugated

6.875x6.875x7.875 ECT-44 Haz Mat Shipping Box 20-Pack

PN: HAZCO1G

6 7/8 x 6 7/8 x 7 7/8 in ECT-44 Single Wall Corrugated 20 PER BUNDLE
$120.62 / BUNDLE
IN STOCK Premium ECT-44 single wall kraft corrugated boxes deliver 40% greater stacking strength than standard shipping containers. These 8x8x8 heavy-duty cartons protect high-value inventory while maximizing pallet density and freight efficiency. Ships flat in bundles of 25 for easy storage and rapid deployment.
Boxes - Corrugated

8x8x8 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 25-Pack

PN: HD0808

8 x 8 x 8 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$28.71 / BUNDLE
IN STOCK Industrial-grade 8x8x8 double wall corrugated boxes with ECT-48 kraft material deliver maximum stacking strength and impact protection for your shipments. Bundled 15-pack ships flat–cutting storage footprint and freight costs. Ideal for warehouse managers and fulfillment directors managing mid-weight products.
Boxes - Corrugated

8x8x8 ECT-48 Kraft Double Wall Corrugated Boxes 15-Pack

PN: HD888DW

8 x 8 x 8 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$19.37 / BUNDLE
IN STOCK UN-rated ECT-44 corrugated hazmat boxes designed for safe 1-gallon paint can shipment. Dimensions 8.5" 8.5" 9.3125" with pre-printed hazardous material warnings and directional arrows. Flat-shipped bundle of 25 reduces warehouse footprint and freight costs.
Boxes - Corrugated

8 1/2x8 1/2x9 3/10 ECT-44 Hazmat Shipping Boxes 25-Pack

PN: HAZ1044

8 1/2 x 8 1/2 x 9 5/16 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$154.06 / BUNDLE
IN STOCK Engineered for maximum protection and stacking performance, these 9x9x9 heavy-duty corrugated boxes deliver 40% greater strength than standard single wall cartons. Built from ECT-44 kraft material, they're ideal for demanding warehouse and fulfillment operations. Sold flat in convenient bundles of 25 to maximize freight efficiency and storage.
Boxes - Corrugated

9x9x9 ECT-44 Kraft Heavy-Duty Corrugated Shipping Boxes 25-Pack

PN: HD999

9 x 9 x 9 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$53.30 / BUNDLE
IN STOCK Industrial-grade double wall corrugated boxes engineered for high-volume shipping and storage. ECT-48 kraft construction delivers superior stacking performance and damage protection. Ships flat–maximize warehouse density and minimize freight costs with our bulk bundle of 25 cartons.
Boxes - Corrugated

9x9x6.5 ECT-48 Kraft Double Wall Corrugated Shipping Boxes 25-Pack

PN: KEG14

9 x 9 x 6 1/2 in ECT-48 Double Wall Corrugated 25 PER BUNDLE
$39.27 / BUNDLE
IN STOCK Ship 1-gallon F-style paint cans safely with these UN 4G/Y51.4/S certified hazmat corrugated boxes. ECT-44 kraft construction meets CFR 49 178.601B requirements. Flat-ship design cuts warehouse storage costs–20 cartons per bundle.
Boxes - Corrugated

8 3/16x5 11/16x12 3/8 ECT-44 Corrugated Shipping Boxes 20-Pack

PN: HAZ1047

8 3/16 x 5 11/16 x 12 3/8 in ECT-44 Single Wall Corrugated 20 PER BUNDLE
$136.72 / BUNDLE
IN STOCK 9 7/16x5" ECT-44 Haz Mat Boxes 4-Quart | 25-Pack Kraft Corrugated
Boxes - Corrugated

9 7/16x5 ECT-44 Kraft 4-Quart | Corrugated Haz Mat Boxes 25-Pack

PN: HAZCO4Q

9 7/16 x 5 x 5 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$126.11 / BUNDLE
IN STOCK ECT-48 double wall construction delivers superior stacking strength and impact protection for demanding warehouse operations. These 9x9x9 heavy-duty corrugated boxes ship flat in bundles of 15, maximizing storage efficiency while reducing freight costs. Ideal for high-velocity fulfillment centers requiring reliable, bulk-ready packaging.
Boxes - Corrugated

9x9x9 ECT-48 Heavy Duty Double Wall Corrugated Shipping Boxes 15-Pack

PN: HD999DW

9 x 9 x 9 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$39.33 / BUNDLE
IN STOCK UN-certified hazmat shipping boxes designed for 1-gallon plastic jugs with ECT-44 single-wall kraft construction. Pre-printed with mandatory hazmat warnings and directional arrows. Bundle of 20 ships flat to maximize warehouse efficiency and minimize storage costs.
Boxes - Corrugated

6x6x12.75 ECT-44 Hazmat Shipping Box 20-Pack

PN: HAZ1050

6 x 6 x 12 3/4 in ECT-44 Single Wall Corrugated 20 PER BUNDLE
$134.29 / BUNDLE
IN STOCK 6 3/4 x 4 5/16 x 10 3/8 ECT-51 Hazmat Paint Can Boxes - Bundle of 20
Boxes - Corrugated

6 3/4x4 5/16x10 3/8 ECT-51 Hazmat Paint Can Boxes 20-Pack

PN: HAZ1021

6 3/4 x 4 5/16 x 10 3/8 in ECT-51 Double Wall Corrugated 20 PER BUNDLE
$139.45 / BUNDLE
IN STOCK Industrial-grade 9x9x13 double wall corrugated boxes engineered for maximum protection and stacking performance. ECT-48 kraft construction delivers heavy-duty durability for demanding fulfillment operations. Sold in bundles of 25 and ship flat to optimize warehouse storage and freight efficiency.
Boxes - Corrugated

9x9x13 ECT-48 Kraft Double Wall Corrugated Boxes 25-Pack

PN: KEG12

9 x 9 x 13 in ECT-48 Double Wall Corrugated 25 PER BUNDLE
$49.53 / BUNDLE
IN STOCK Ship hazardous liquids with confidence using these ECT-51 double wall corrugated hazmat boxes designed for 2 - 1 gallon F-style containers. Kraft construction with printed UN certification, warning labels, and directional arrows meets CFR 49 178.601B requirements. Flat-store design maximizes warehouse efficiency while minimizing freight costs–20 cartons per bundle.
Boxes - Corrugated

9x6 11/16x10 1/4 ECT-51 Double Wall Hazmat Boxes 20-Pack

PN: HAZ1022

9 x 6 11/16 x 10 1/4 in ECT-51 Double Wall Corrugated 20 PER BUNDLE
$224.22 / BUNDLE
IN STOCK Protect high-value shipments with ECT-48 double wall construction and proven stacking performance. These 6x6x36 kraft corrugated boxes deliver superior burst strength and compression resistance for warehouses handling demanding freight. Bundle of 15 ships flat–maximize your storage efficiency and reduce handling costs.
Boxes - Corrugated

6x6x36 ECT-48 Kraft Double Wall Corrugated Boxes 15-Pack

PN: HD6636DW

6 x 6 x 36 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$85.56 / BUNDLE
IN STOCK ECT-44 single wall kraft corrugated boxes sized 44" × 6" × 35" for demanding fulfillment operations. Side loading design with flat-ship capability reduces storage footprint and freight costs per unit. Sold as bundle of 10–the standard for high-volume warehouses.
Boxes - Corrugated

44x6x35 ECT-44 Kraft Side Loading Boxes 10-Pack

PN: HD44635FOL

44 x 6 x 35 in ECT-44 Single Wall Corrugated 10 PER BUNDLE
$147.75 / BUNDLE
IN STOCK Adjustable 48x6x38" telescoping inner boxes built from ECT-44 kraft corrugated for maximum stacking strength on tall and irregularly shaped items. Two-piece design collapses flat for 40% better freight efficiency and warehouse storage. Sold in bundles of 10 with full overlap bottoms for added durability.
Boxes - Corrugated

48x6x38 ECT-44 Kraft Telescoping Boxes Heavy-Duty 10-Pack

PN: T48638INHD

48 x 6 x 38 in ECT-44 Corrugated 10 PER BUNDLE
$189.42 / BUNDLE
IN STOCK Adjustable two-piece telescoping inner boxes designed for tall and irregularly shaped items. 6" x 6" x 48" dimensions with ECT-48 double wall kraft corrugated construction and full overlap (FOL) bottom reinforcement. Sold in bundles of 15 and pairs with our matching outer boxes for complete protective shipping solutions.
Boxes - Corrugated

6x6x48 ECT-48 Kraft Double Wall Telescoping Inner Boxes 15-Pack

PN: T6648INNERDW

6 x 6 x 48 in D.W./ECT-48 Corrugated 15 PER BUNDLE
$116.44 / BUNDLE
IN STOCK ECT-51 double wall corrugated cartons engineered for flat panel TV shipment. 46x8x30" kraft boxes feature full overlap flaps and pre-printed fragile messaging on two sides for maximum in-transit protection. Sold as bundle of 5–reduce per-unit cost and keep your fulfillment operation supplied.
Boxes - Corrugated

46x8x30 ECT-51 Double Wall TV Box 5-Pack

PN: 46830FPFOL

46 x 8 x 30 in ECT-51 Double Wall Corrugated 5 PER BUNDLE
$130.63 / BUNDLE
IN STOCK Heavy-duty ECT-44 telescoping outer cartons (48½" × 6½" × 38") designed for tall and irregularly shaped items. Adjustable two-piece construction with full overlap bottom strengthens stacking performance. Sold as bundle of 10–pair with matching inner cartons to complete the set.
Boxes - Corrugated

48x38 ECT-44 Adjustable Heavy-Duty Telescoping Outer Box 10-Pack

PN: T48638OUTHD

48 x 38 x 38 in ECT-44 Corrugated 10 PER BUNDLE
$206.29 / BUNDLE
IN STOCK Engineered for tall and irregularly shaped items, these 6.75x6.75x48 double wall telescoping cartons feature an adjustable two-piece design with FOL bottom reinforcement. ECT-48 kraft corrugated construction rated for heavy stacking. Sold in bundles of 15 outer boxes (pair with T6648INNERDW inner cartons to complete your set).
Boxes - Corrugated

6.75x6.75x48 ECT-48 Double Wall Telescoping Boxes 15-Pack

PN: T6648OUTERDW

6 3/4 x 6 3/4 x 48 in D.W./ECT-48 Corrugated 15 PER BUNDLE
$129.43 / BUNDLE
IN STOCK Industrial-grade 6x6x48 double wall corrugated boxes manufactured from ECT-48 kraft material deliver maximum stacking strength and impact protection for demanding fulfillment operations. Each bundle of 15 ships flat, cutting storage footprint and freight costs. Purpose-built for warehouse managers who need reliable, high-performance shipping cartons without compromise.
Boxes - Corrugated

6x6x48 ECT-48 Kraft Heavy Duty Double Wall Corrugated Shipping Boxes 15-Pack

PN: HD6648DW

6 x 6 x 48 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$97.26 / BUNDLE
IN STOCK Heavy-duty ECT-48 double wall corrugated boxes designed for maximum protection and stacking performance in high-volume fulfillment environments. Each 48x12x12 kraft carton delivers superior crush resistance and freight efficiency. Sold in bundles of 10 and ship flat to reduce warehouse storage footprint.
Boxes - Corrugated

48x12x12 ECT-48 Kraft Heavy-Duty Corrugated Double Wall Shipping Boxes 10-Pack

PN: HD481212DW

48 x 12 x 12 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$122.26 / BUNDLE
IN STOCK ECT-44 single wall kraft corrugated side loading boxes designed for warehouse efficiency and maximum freight optimization. 40" x 5" x 45" dimensions ship flat in bundles of 10, reducing storage footprint while maintaining superior stacking strength. Purpose-built for fulfillment centers requiring reliable, cost-effective shipping cartons.
Boxes - Corrugated

40x5x45 ECT-44 Kraft Side Loading Boxes 10-Pack

PN: HD40545FOL

40 x 5 x 45 in ECT-44 Single Wall Corrugated 10 PER BUNDLE
$179.29 / BUNDLE
IN STOCK Maximize your fulfillment efficiency with these 48x8x24 ECT-44 kraft corrugated side loading boxes. Ship and store flat to reduce warehouse footprint and freight costs by up to 40%. Bundle of 10 ready-to-assemble cartons designed for high-volume operations.
Boxes - Corrugated

48x8x24 ECT-44 Kraft Side Loading Boxes 10-Pack

PN: HD48824FOL

48 x 8 x 24 in ECT-44 Single Wall Corrugated 10 PER BUNDLE
$150.25 / BUNDLE
IN STOCK Adjustable 8x8x48" double wall telescoping inner cartons engineered for tall and irregularly shaped items. ECT-48 kraft corrugated with full overlap bottom delivers superior stacking strength and crush resistance. Sold as bundle of 15–pair with matching T8848OUTERDW outer carton to complete your two-piece shipping system.
Boxes - Corrugated

8x8x48 ECT-48 Adjustable Double Wall Telescoping Inner Boxes 15-Pack

PN: T8848INNERDW

8 x 8 x 48 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$139.49 / BUNDLE
IN STOCK Engineered for height-critical shipments: ECT-48 double wall telescoping outer cartons with adjustable two-piece design fit tall and irregular products precisely. FOL reinforced bottom delivers superior stacking strength. Bundle of 15 kraft corrugated boxes ready to pair with matching inner cartons.
Boxes - Corrugated

8.75x8.75x48 ECT-48 Double Wall Telescoping Outer Boxes 15-Pack

PN: T8848OUTERDW

8 3/4 x 8 3/4 x 48 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$154.04 / BUNDLE
IN STOCK Maximize your warehouse efficiency with this 58x41x45" double wall corrugated box (ECT-51). Designed for consolidating multiple piece shipments and protecting bulky, irregularly shaped items, this heavy-duty carton reduces freight costs and improves stacking performance. Removable panels make packing and unpacking fast–perfect for high-volume fulfillment operations.
Boxes - Corrugated

58x41x45 ECT-51 Double Wall Corrugated Box

PN: AF584145

58 x 41 x 45 in ECT-51 Double Wall Corrugated 1 PER BUNDLE
$122.76 / BUNDLE
IN STOCK ECT-44 single-wall kraft corrugated boxes engineered for side loading operations and maximum freight efficiency. 54x8x28" dimensions ship flat to reduce storage footprint and transportation costs. Bundle of 5 cartons ready to deploy in your fulfillment workflow.
Boxes - Corrugated

54x8x28 ECT-44 Kraft Side Loading Boxes 5-Pack

PN: HD54828FOL

54 x 8 x 28 in ECT-44 Single Wall Corrugated 5 PER BUNDLE
$124.40 / BUNDLE
IN STOCK Professional-grade ECT-48 double wall corrugated boxes sized 48" x 16" x 16" for maximum protection and stacking performance. Heavy-duty kraft construction rated for demanding warehouse and fulfillment operations. Sold in bundles of 10 and ship flat to minimize storage footprint and reduce freight costs.
Boxes - Corrugated

48x16x16 ECT-48 Kraft Double Wall Corrugated Boxes 10-Pack

PN: HD481616DW

48 x 16 x 16 in ECT-48 Double Wall Corrugated 10 PER BUNDLE
$133.99 / BUNDLE
IN STOCK ECT-48 double wall corrugated boxes built for industrial-grade shipping and storage. These 60"x12"x12" kraft cartons deliver superior stacking performance and crush resistance for high-volume fulfillment operations. Ship and store flat to optimize warehouse space–bundle of 5 boxes.
Boxes - Corrugated

60x12x12 ECT-48 Kraft Double Wall Corrugated Boxes 5-Pack

PN: HD601212DW

60 x 12 x 12 in ECT-48 Double Wall Corrugated 5 PER BUNDLE
$89.54 / BUNDLE

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  • Board grade or strength rating
  • Box style and closure
  • Case or bundle quantity
Common wrong-order risk: Choosing the outside size instead of the inside size. Confirm product fit, void fill, and storage space before ordering.
Use the box size calculator -> Contact support for larger orders -> Compare corrugated box types -> View products below ->