Boxes & Mailers

SELECTION EXPERT ADVICE

Wall Strength & Load Capacity
MORE INFO
Match single-, double-, or triple-wall corrugated construction to your product weight to prevent in-transit damage and minimize costly returns.
Dimensional Weight Cost Control
MORE INFO
Right-sized boxes cut carrier DIM weight charges, selecting the optimal LxWxH for each SKU directly lowers your per-shipment freight cost.
Mailer Box vs. RSC: Choose Correctly
MORE INFO
Self-locking mailer boxes suit branded DTC shipments; traditional RSC corrugated boxes are ideal for palletized B2B and high-volume fulfillment.

Need help choosing boxes?

Pick the right corrugated box without overpaying for size or strength

Use these buying guides to size your box, compare board strength, and avoid dimensional weight surcharges.

Corrugated Boxes Guide → How to choose size, strength, and wall type Box Size Calculator → Find the smallest safe box for your product 32 ECT vs 200 lb Test → Which board strength rating fits your shipment
Overview

Boxes Mailers — compare in-stock Packrift options by exact spec, with public pricing and no account required. Ships from 5 US warehouses (Central IL, NE PA, South TX, SE GA, West CA), routed to the location nearest you. Below are verified catalog SKUs, collection paths, and a bulk-quote route.

What To Buy Here

  • You need a Packrift buying path for Boxes Mailers.
  • You want verified SKU links, current catalog specs, and a quote route instead of thin search copy.
  • You are comparing product fit before reordering or requesting a bulk quote.

Catalog Matches

SKU Product Dimensions Material Color Pack
1066 10x6x6 ECT-32 Kraft Long Corrugated Boxes - 25 Bundle 10 x 6 x 6 kraft corrugated kraft 25
1054 10x5x4 ECT-32 Kraft Corrugated Boxes - Long Side Opening, 25 Bundle 10 x 5 x 4 kraft corrugated kraft 25
1265 12x6x5" ECT-32 Kraft Corrugated Long Boxes - 25 Bundle 12 x 6 x 5 kraft corrugated kraft 25
1333 13x3x3 ECT-32 Kraft Corrugated Long Boxes - Easy Pack, 25 Bundle 13 x 3 x 3 kraft corrugated kraft 25
1388 13x8x8 ECT-32 Kraft Corrugated Boxes - Long Item Shipping, 25 Bundle 13 x 8 x 8 kraft corrugated kraft 25
1466 14x6x6" ECT-32 Kraft Corrugated Boxes - Long Item Shipping, 25 Bundle 14 x 6 x 6 kraft corrugated kraft 25
1477 14x7x7 ECT-32 Kraft Corrugated Boxes - Long Item Shipping, 25-Pack 14 x 7 x 7 kraft corrugated kraft 25
1664 16x6x4 ECT-32 Kraft Corrugated Boxes - Easy Pack Long Design, 25 Bundle 16 x 6 x 4 kraft corrugated kraft 25

Open a product page for current pricing and availability.

How To Choose

  • Start with the SKU row whose dimensions, material, color, and pack quantity match your current job.
  • Open the PDP before ordering when a field says not listed in current catalog data.
  • Use the bulk quote path for larger, recurring, mixed-SKU, or freight-sensitive purchases.

When Not To Use

  • Do not infer unlisted product specs from similar SKUs.
  • Do not use this page for regulated, food-contact, outdoor exposure, or load-rating requirements unless the exact SKU record verifies that requirement.

Substitutes and Accessories

Reorder or Bulk Quote

For reorders, use the linked PDP SKU or the reorder-by-SKU path. For larger or mixed orders, use the bulk quote path and include SKU, quantity, destination ZIP, and timing.

Related Paths

FAQ

Which products match this page?
The Catalog Matches table above lists verified in-stock SKUs for Boxes Mailers, with current dimensions, material, color, and pack quantity. Open a product page for full specs and current pricing.
What should I do when a field is not listed?
Do not infer it. Use the PDP or bulk quote path so the order can be checked against current catalog data.
Can I request a quote instead of ordering one SKU?
Yes. Use the bulk quote path with the relevant SKU list, quantities, destination ZIP, and required timing.

3086 Results

showing boxes & mailers products

IN STOCK Heavy-duty ECT-48 double wall corrugated boxes built for warehouse managers and fulfillment directors who need reliable, stackable shipping protection. These 20
Boxes - Corrugated

20x16x10 Double Wall Corrugated Boxes ECT-48 - Bundle of 15

PN: HD201610DW

20 x 16 x 10 in D.W./ECT-48 Corrugated 15 PER BUNDLE
$113.38 / BUNDLE
IN STOCK Industrial-grade 20x16x8 corrugated shipping boxes built from ECT-32 kraft material for dependable protection and stackability. Pack of 25 boxes delivers volume savings ideal for warehouse managers and fulfillment operations. Recyclable kraft construction supports sustainable packaging goals.
Boxes - Corrugated

20x16x8 Shipping Boxes — ECT-32 Kraft Corrugated, 25-Pack

PN: 20168

20 x 16 x 8 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$63.49 / BUNDLE
IN STOCK Optimize your shipping costs with these 20x16x6 ECT-32 kraft corrugated boxes–engineered for shallow products like apparel, books, frames, and artwork. Ships flat in bundles of 25, maximizing your warehouse storage and reducing freight expenses. Reliable single-wall construction rated for mid-weight items.
Boxes - Corrugated

20x16x6 Shipping Boxes — ECT-32 Kraft Corrugated, 25-Pack

PN: 20166

20 x 16 x 6 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$55.39 / BUNDLE
IN STOCK Heavy-duty ECT-44 single wall kraft corrugated boxes engineered for maximum stacking performance and impact protection. These 18x18x18
Boxes - Corrugated

18x18x18" ECT-44 Heavy-Duty Kraft Corrugated Boxes - Bundle of 20

PN: HD1818

18 x 18 x 18 in ECT-44 Single Wall Corrugated 20 PER BUNDLE
$92.73 / BUNDLE
IN STOCK ECT-32 single-wall corrugated boxes in clean white finish–5.3 cubic feet of dependable cube-shaped shipping capacity per box. Bundle of 20 offers maximum volume efficiency for warehouse fulfillment. Crisp white surface accepts printed labels and special instructions without compromise.
Boxes - Corrugated

18x18x18" White Corrugated Box ECT-32 Single Wall Bundle 20

PN: 181818W

18 x 18 x 18 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$96.67 / BUNDLE
IN STOCK Eliminate carton sizer equipment and reduce inventory complexity with these pre-scored ECT-32 kraft corrugated boxes. One SKU adjusts to multiple heights–fold to 18
Boxes - Corrugated

18x18x18 Shipping Boxes - Multi-Depth ECT-32 Kraft Corrugated, 20-Pack

PN: MD181818

18 x 18 x 18 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$67.59 / BUNDLE
IN STOCK Ship round and cylindrical items with confidence using these 18x18x18
Boxes - Corrugated

18x18x18 Shipping Boxes - ECT-32 Kraft Corrugated, 20-Pack

PN: 181818

18 x 18 x 18 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$59.76 / BUNDLE
IN STOCK Engineered for demanding warehouse operations, these 18x18x12 heavy-duty corrugated boxes feature ECT-44 single wall kraft construction–40% stronger than standard shipping containers. Maximize stacking performance and freight efficiency with superior burst strength. Sold flat in bundles of 25 for space-saving storage and consistent supply.
Boxes - Corrugated

18x18x12 Heavy-Duty ECT-44 Kraft Corrugated Boxes - Bundle of 25

PN: HD181812

18 x 18 x 12 in ECT-44 Single Wall Corrugated 25 PER BUNDLE
$93.75 / BUNDLE
IN STOCK Heavy-duty ECT-48 kraft corrugated boxes deliver superior stacking strength and impact protection for demanding shipping and storage applications. These 18x18x10 double wall cartons are engineered for warehouse efficiency–bundle of 15 ships flat to maximize freight utilization and minimize storage footprint.
Boxes - Corrugated

18x18x10 ECT-48 Double Wall Corrugated Boxes - Heavy-Duty Kraft, Bundle of 15

PN: HD181810DW

18 x 18 x 10 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$105.45 / BUNDLE
IN STOCK Industrial-grade 18x18x8 double wall corrugated boxes with ECT-48 kraft construction deliver maximum stacking strength and damage protection for high-volume shipping operations. Each bundle of 15 cartons ships flat to minimize storage footprint and reduce freight costs. Built for warehouse managers who demand reliable, heavy-duty packaging performance.
Boxes - Corrugated

18x18x8 ECT-48 Double Wall Corrugated Boxes - Heavy Duty Kraft, 15-Pack

PN: HD18188DW

18 x 18 x 8 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$64.72 / BUNDLE
IN STOCK Heavy-duty ECT-48 double wall kraft corrugated boxes designed for maximum stacking strength and freight protection. 18
Boxes - Corrugated

18x18x6 ECT-48 Double Wall Kraft Boxes - Heavy-Duty Shipping (Bundle of 15)

PN: HD18186DW

18 x 18 x 6 in ECT-48 Double Wall Corrugated 15 PER BUNDLE
$80.97 / BUNDLE
IN STOCK ECT-32 kraft corrugated boxes sized 16
Boxes - Corrugated

16x16x20 Shipping Boxes - ECT-32 Kraft Corrugated, 20-Pack

PN: 161620

16 x 16 x 20 in ECT-32 Single Wall Corrugated 20 PER BUNDLE
$65.05 / BUNDLE
IN STOCK Industry-standard 13x3x30 full overlap side loading boxes with ECT-32 single-wall corrugated construction. Ships and stores flat to maximize warehouse efficiency and reduce freight costs. Trusted by fulfillment directors nationwide–25-pack bundle ready to deploy.
Boxes - Corrugated

13x3x30 ECT-32 Side Loading Boxes - Full Overlap FOL, 25-Pack

PN: 13330FOL

13 x 3 x 30 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$103.04 / BUNDLE
IN STOCK End-load 12x12x24 tall corrugated boxes built from ECT-32 kraft material deliver reliable stacking strength and freight efficiency for irregular-shaped shipments. Holds 2.0 cubic feet per box. Sold as a bundle of 25 cartons ready to deploy in your warehouse operations.
Boxes - Corrugated

12x12x24 Shipping Boxes - ECT-32 Kraft Corrugated, 25-Pack

PN: 121224

12 x 12 x 24 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$60.57 / BUNDLE
IN STOCK Sturdy ECT-32 kraft corrugated boxes sized 6
Boxes - Corrugated

6x6x30 Shipping Boxes — ECT-32 Kraft Corrugated, 25-Pack

PN: 6630

6 x 6 x 30 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$51.96 / BUNDLE
IN STOCK Ship tall items with confidence using these 4x4x32 corrugated boxes made from sturdy ECT-32 kraft material. End-loading design speeds packing; sold flat in bundles of 25 for warehouse efficiency. Perfect replacement for mailing tubes when shipping shelving, fishing rods, trophies, and similar tall products.
Boxes - Corrugated

4x4x32 Shipping Boxes - ECT-32 Kraft Corrugated, 25-Pack

PN: 4432

4 x 4 x 32 in ECT-32 Single Wall Corrugated 25 PER BUNDLE
$64.60 / BUNDLE

Product Help Request

Send the SKU, quantity, delivery ZIP, and any required specs so we can route the request.

Buying path

Buy Boxes & Mailers by the specs that change the order

Use filters, product titles, and product pages to compare size, material, pack count, case quantity, and fit before ordering.

Compare

Use filters and product titles to narrow by the specs that affect fit.

Confirm

Open the product page before ordering a case so you can check quantity, unit, and limits.

Reorder

Save the SKU or product link for repeat purchasing and support questions.

Larger orders

For pallet, recurring, or mixed-SKU needs, send support the details before placing a large order.

What to check first

  • Inside dimensions
  • 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 ->

Buying FAQ

What should I check before buying Boxes & Mailers?

Compare Inside dimensions, Board grade or strength rating, Box style and closure, Case or bundle quantity before choosing a product from this collection.

Can I buy Boxes & Mailers online?

Use the product grid to open a product page, confirm the SKU, quantity, unit, availability, and price, then add available products to cart.

When should I contact support?

Contact support for pallet, recurring, mixed-SKU, or uncertain-fit orders, or when the product page does not answer the size, quantity, or delivery question.