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Case QuantityPrice
1$105.28 / case
5 $100.02 / case
10 $92.65 / case

White Mailer Box
16½ x 12 x 3½"
25/Bundle

  • Internal Measurements: 15 ¾ x 11 ¾ x 3 ¼"
  • Easy to customize: Design online and print full color CMYK
  • Great for shipping, subscription boxes, gift boxes, and e-commerce packaging
  • 200# B Flute: 1/8" thick corrugated board
  • All our locking mailers are produced right here in the USA
  • Sustainably sourced and recyclable
$105.28 (Case Pack: 25 ea.)
$105.28
White Mailer Box is available to buy in increments of 1

Interested in larger quantities or custom size?

White Mailer Box

At UCanPack, we have curated a wide range of white mailer boxes that are visually appealing and robust. They protect your packages and are ideal for B2B companies. With internal measurements of 15 ¾ x 11 ¾ x 3 ¼", this white corrugated mailer box adds an aesthetic touch to the packaging.

Our 16½ x 12 x 3½" white mailer boxes are manufactured using corrugated boards that prevent packaging damage during transportation. While the design ensures strength, the elegant white color guarantees stylish packaging.

If your business deals in packing and shipping various products, you have come to the right place. At UCanPack, we make it a priority to deliver the best quality, sustainable, and cost-effective products.

Part NoUCP077_W
ColorWhite/Kraft
Item Weight0.62 lbs
Wall Construction200#/ECT-32 Single Wall
Dimensions 16½ x 12 x 3½"
Case Pack25 ea
Case Weight15.60 lbs
NoteCustom printing & sizes available. Call for details.

A Classic Packaging Choice

These mailer boxes are made from 200# B Flute: 1/8" corrugated board and are delivered as 25 pieces per bundle.

What are these boxes used for?

  • Clothing and Apparel – These white mailer boxes can accommodate folded shirts, blouses, pants, and other garments.
  • Electronic Items and Gadgets – You can use these boxes to pack and ship large electronics such as laptops (that fit in the box’s size), monitors (smaller ones), computer peripherals, or multiple smaller electronic items.
  • Office Supplies – They are fit for packaging bulk orders of stationery, office organizers, and larger packs of supplies like printer paper or ink cartridges.
  • Medical Supplies – The boxes are used to ship or store small diagnostic tools, medical kits, laboratory glassware, medical samples, etc.
  • Food Items – Large quantities of specialty foods, gourmet gift baskets, and catering supplies can be transported via these boxes.
  • Hardware Tools – They are also suitable for shipping medium-sized tools, small machinery parts, and workshop supplies.
  • Gifts and Promotional Items – They make a decent option for packing corporate gifts, promotional merchandise, and branded gift sets.
  • Sporting equipment – You can use the mailer boxes to pack small sports gear, athletic apparel, training accessories, etc. 

Frequently Asked Questions (FAQs)

box measurement

Q: Are the mailer boxes customizable?

A: Yes, you can customize these 16½ x 12 x 3½" boxes with brand names and logos to promote your company. You can design online and the results are printed in full-color CMYK.

Q: What is a standard mailer box size? 

A: Typically, the standard size for a small mailer box is 12 x 12 x 12", for a medium box is between 18 x 14 x 12" and 24 x 18 x 18", and for a large box is 24 x 18 x 24".

Q: Can I order a sample?

A: Absolutely! Samples help gain the trust of potential clients while you get to judge the quality of the item. Samples are usually delivered within 1 to 2 business days.

More Information
Part No.UCP077_w
ColorWhite/Kraft
Type200#/ECT-32 Single Wall
Flute TypeB Flute