Blank White Square Mailer Box

Blank white square mailers are here! Fill these plain mailers with books, shirts, documents and more! Add custom packing tape or a logo sticker to the inside or outside panels for a clean, affordable logo box.

Customize and Check Prices

Industry-Leading Turn Times

No Minimums

Unboxing Experience

Extra Protection

Super Responsive Customer Service

100% Recyclable

Product Details

Our Materials

Our shipping containers are made from sturdy corrugated cardboard in fluting sturdy enough to withstand the rigors of most shipping scenarios. (We've all seen those packages that were abused beyond recognition...)

Fluting: B-flute
Exterior material: white
Interior material: kraft

Sizes

12” x 12” x 2.25” - Falls within USPS Tier 3 Shipping Rates

Dimensions, inside: 12” x 12” x 2.25”
Dimensions, outside*: 13” x 12.313” x 2.375”
Weight in ounces: 8 ounces
USPS Tier: .22ft³ or Tier 3

* all outside dimensions are approximate and will vary just slightly based on assembly

Our Process

Product Guarantee

We take full responsibility for the quality of the product. If you are ever dissatisfied with the quality, reach out to us immediately. Our terms and conditions outline our policies on refunds.

Sustainability Promise

At BoxUp, we value the role we play in supporting environmental and sustainable practices. Our raw material is supplied by companies certified by the Sustainable Forestry Initiative, (SFI). SFI is the largest single forest standard in the world – a standard backed by continuous research. Our commitment ensures that our boxes are made from at least 50% recycled material and are 100% recyclable.

Shipping

All boxes are shipped from our facility in Terre Haute, IN. UPS ground shipping is our default. Our boxes are packed in a corrugated cardboard box usually no more than 50 pounds each. You will receive a shipping notification when your order is being processed for shipping. Please allow 24 hours for the tracking number to populate your shipping information. Expedited shipping is available on the shipping calculator. If you require special shipping instructions such as blind shipping, a house UPS account or an alternate shipping arrangement, you must reach out to customers service to approve and process your request.