Boxes & Mailers

SELECTION EXPERT ADVICE

Wall Strength & Load Capacity
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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
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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
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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

3,094 corrugated boxes, literature mailers and mailing tubes from 2 to 36 inches, mostly ECT-32 kraft and white, sold in bundles of 10 to 50. Each listing shows inside dimensions, board grade and bundle count so you can match a carton to the part you ship. Orders ship from five US regional warehouses; for mixed or recurring orders use the bulk quote path with SKU, quantity and destination ZIP.

Related collections

IN STOCK Pre-assembled insulated shipping kit with seamless molded EPS foam container and 200# white corrugated carton. Maintains temperature integrity for perishable products during transit. Lightweight, reusable, and pre-printed with shipping instructions (Rush, Perishable, This Side Up arrows).
Boxes - Corrugated

26x19.75x10.5 EPS Foam Insulated Shipping Box

PN: 271C

26 x 19.75 x 10 1/2 in EPS Foam/200# White Corrugated 1 PER CASE
$81.03 / CASE
IN STOCK Pre-assembled insulated shipping kit featuring a 200#/ECT-32 white corrugated carton with seamless molded EPS foam container and tight-fitting lid. Dimensions: 21.25" x 15.5" x 15.5". Lightweight, reusable design with printed shipping instructions (Rush, Perishable, This Side Up) for complete shipping compliance.
Boxes - Corrugated

21.25x15.5x15.5 EPS Foam Insulated Shipping Kits 1/Case

PN: 269C

21 1/4 x 15.5 x 15 1/2 in EPS Foam/200# White Corrugated 1 PER CASE
$61.33 / EACH
IN STOCK Protect temperature-sensitive shipments with this pre-assembled insulated shipping kit featuring seamless molded EPS foam and 200#/ECT-32 white corrugated construction. Lightweight, reusable design with pre-printed shipping instructions (Rush, Perishable, This Side Up). Ideal for perishable products, pharmaceuticals, and food distribution.
Boxes - Corrugated

19.5x11.5x4.125 Insulated Shipping Kit

PN: 260C

19 1/2 x 11.5 x 4 1/8 in EPS Foam/200# White Corrugated 1 PER CASE
$24.44 / EACH
IN STOCK Pre-assembled insulated shipping kit designed for perishable product protection. Features a seamless molded EPS foam container integrated with 200#/ECT-32 white corrugated carton and tight-fitting lid. Lightweight, reusable, and printed with Rush, Perishable, and directional arrows for full shipping compliance.
Boxes - Corrugated

19x12x12.5 EPS Foam Insulated Shipping Kits 1/Case

PN: 261C

19 x 12 x 12 1/2 in EPS Foam/200# White Corrugated 1 PER CASE
$39.00 / CASE
IN STOCK Protect temperature-sensitive products with this pre-assembled 18x14x19 insulated shipping kit. Features a seamless molded EPS foam container inside durable 200#/ECT-32 white corrugated carton with pre-printed shipping instructions (Rush, Perishable, This Side Up). Lightweight and reusable for cost-effective repeat shipments.
Boxes - Corrugated

18x14x19 EPS Foam Insulated Shipping Kits 1/Case

PN: 248C

18 x 14 x 19 in EPS Foam/200# White Corrugated 1 PER CASE
$43.65 / EACH
IN STOCK Ship temperature-sensitive products with confidence using this complete 17x17x9 insulated shipping kit. Features seamless molded EPS foam insulation paired with durable 200# white corrugated carton construction–pre-assembled and ready to pack. Lightweight, reusable design with printed Rush, Perishable, and This Side Up markings for full shipping compliance.
Boxes - Corrugated

17x17x9 Insulated Shipping Kit EPS Foam Corrugated Box Case

PN: 250C

17 x 17 x 9 in EPS Foam/200# White Corrugated 1 PER CASE
$49.98 / EACH
IN STOCK Pre-assembled insulated shipping kit (17" x 10" x 10.5") engineered for temperature-sensitive products. Combines 200#/ECT-32 white corrugated carton with seamless molded EPS foam liner and tight-fitting lid. Lightweight, reusable, and printed with Rush/Perishable/This Side Up compliance markings.
Boxes - Corrugated

17x10x10.5 EPS Foam Insulated Shipping Kits 1/Case

PN: 246C

17 x 10 x 10 1/2 in EPS Foam/200# White Corrugated 1 PER CASE
$34.48 / EACH
IN STOCK Keep temperature-sensitive products protected with this 17x10x8.25" insulated shipping kit featuring seamless molded EPS foam and durable 200#/ECT-32 white corrugated construction. Pre-assembled and ready to use, with pre-printed shipping instructions (Rush, Perishable, This Side Up). Lightweight and reusable for maximum cost efficiency across multiple shipments.
Boxes - Corrugated

17x10x8.25 EPS Foam Insulated Shipping Kits 1/Case

PN: 245C

17 x 10 x 8 1/4 in EPS Foam/200# White Corrugated 1 PER CASE
$32.17 / CASE
IN STOCK Protect temperature-sensitive shipments with this pre-assembled insulated shipping kit featuring molded EPS foam interior and 200# white corrugated carton. Dimensions: 16.75" x 16.75" x 15". Each case includes one complete kit with tight-fitting lid and pre-printed shipping instructions (Rush, Perishable, This Side Up).
Boxes - Corrugated

16.75x16.75x15 Insulated Shipping Kit

PN: 249C

16 3/4 x 16 3/4 x 15 in EPS Foam/200# White Corrugated 1 PER CASE
$57.46 / EACH
IN STOCK Pre-assembled insulated shipping kit featuring a 200#/ECT-32 corrugated carton with seamless molded EPS foam liner and tight-fitting lid. Maintain temperature control and protect perishable products during transit. Lightweight, reusable, and pre-printed with Rush, Perishable, and This Side Up handling instructions.
Boxes - Corrugated

13.75x11.75x11.875 EPS Foam Insulated Shipping Kits 1/Case

PN: 238C

13 3/4 x 11.75 x 11 7/8 in EPS Foam/200# White Corrugated 1 PER CASE
$35.28 / CASE
IN STOCK Pre-assembled insulated shipping kit (13" x 13" x 12.5") with seamless molded EPS foam container and 200# white corrugated carton. Includes perishable product labeling and tight-fitting lid to maintain product integrity. Lightweight, reusable design reduces shipping costs per unit.
Boxes - Corrugated

13x13x12.5 EPS Foam Insulated Shipping Kits 1/Case

PN: 240C

13 x 13 x 12 1/2 in EPS Foam/200# White Corrugated 1 PER CASE
$37.92 / EACH
IN STOCK Pre-assembled insulated shipping kit designed for temperature-sensitive products. Features seamless molded EPS foam protection inside a 200# ECT-32 white corrugated carton with pre-printed shipping instructions (Rush, Perishable, This Side Up). Lightweight, reusable, and fully compliant with perishable product shipping requirements.
Boxes - Corrugated

12x12x11.5 EPS Foam Insulated Shipping Kits 1/Case

PN: 230C

12 x 12 x 11 1/2 in EPS Foam/200# White Corrugated 1 PER CASE
$39.98 / EACH
IN STOCK Complete 12x10x9 insulated shipping solution featuring a pre-assembled 200#/ECT-32 white corrugated carton with seamless molded EPS foam container and tight-fitting lid. Lightweight, reusable, and pre-printed with Rush, Perishable, and This Side Up shipping instructions for full compliance. Ideal for perishable products and temperature-sensitive items requiring reliable protection during transit.
Boxes - Corrugated

12x10x9 EPS Foam Insulated Shipping Kits 1/Case

PN: 229C

12 x 10 x 9 in EPS Foam/200# White Corrugated 1 PER CASE
$27.59 / CASE
IN STOCK Protect temperature-sensitive shipments with this pre-assembled 12x10x7 insulated shipping kit featuring seamless molded EPS foam and 200# corrugated construction. Lightweight, reusable design reduces per-shipment costs while maintaining product integrity. Includes Rush, Perishable, and directional shipping labels for full compliance.
Boxes - Corrugated

12x10x7 EPS Foam Insulated Shipping Kits 1/Case

PN: 227C

12 x 10 x 7 in EPS Foam/200# White Corrugated 1 PER CASE
$24.43 / CASE
IN STOCK Pre-assembled 12x10x5 insulated shipping kits designed for perishable products and temperature-sensitive goods. Each case includes 4 complete units with molded EPS foam liners, tight-fitting lids, and 200# ECT-32 white corrugated cartons featuring printed Rush, Perishable, and This Side Up labels. Lightweight, reusable, and built for compliance with shipping regulations.
Boxes - Corrugated

12x10x5 EPS Foam Insulated Shipping Kits 4/Case

PN: 225C

12 x 10 x 5 in EPS Foam/200# White Corrugated 4 PER CASE
$74.81 / CASE
IN STOCK 10.5x8.25x9.25 Insulated Shipping Kit EPS Foam Corrugated Box Case of 2
Boxes - Corrugated

10.5x8.25x9.25 EPS Foam Insulated Shipping Kits 2/Case

PN: 220C

10 1/2 x 8.25 x 9 1/4 in EPS Foam/200# White Corrugated 2 PER CASE
$45.40 / CASE

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 orders, send your list and ZIP and get a delivered price by email.

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 finder -> Get a delivered quote for larger orders -> Compare corrugated box types -> View products below ->