Custom Kraft Mailer Box

Built to Ship with Confidence

Protect your items from warehouse to doorstep:

• Sturdy corrugated kraft board construction
• Crush-resistant walls and reinforced edges
• Secure tuck-top or self-locking closures
• Flat-packed for easy storage and assembly

Branding That Travels Well

Put your logo in front of every recipient:

• Custom printing inside and out
• Minimalist black, white, or full-color options
• Branded stickers, tape, or QR codes available
• Matte, gloss, or soft-touch finishes on request

Eco-Friendly and Customer-Approved

Send a message of sustainability with every shipment:

• Made from recycled kraft paperboard
• Fully recyclable, compostable, and biodegradable
• Plastic-free design, safe for eco packaging programs
• No harsh inks or coatings—just natural appeal

Sizes and Styles for Every Product

Fit your box to your brand and product range:

• Available in small, medium, and large formats
• Die-cut inserts and padding available
• Optional interior print for a surprise reveal
• Perfect for beauty, food, apparel, and more

Ideal For:

• Subscription box services
• Online retail and eCommerce shipping
• Sustainable product packaging
• Artisan brands and handmade goods

Your Brand’s Message—Delivered Naturally

With a kraft mailer box, you give your customers more than just a package—you deliver a tactile, earth-friendly experience that turns unboxing into a branding moment. Keep it simple. Keep it smart. Keep it kraft.
To get cost-effective packaging boxes without compromising on quality, you can contact us at (469) 649-8706 or email us sales@customboxeslab.com

When measuring a custom box, there are a few technical specifications that must be considered to ensure proper design, manufacturing, and fit for the product. Here are the major technical things to measure a custom box:

Inside Dimensions (Critical for Product Fit)

• Length (L): The longest side of the box measured inside from one corner to the opposite corner.
• Width (W): The shorter side of the box measured inside perpendicular to the length.
• Depth/Height (D or H): Measured inside from the bottom to the top opening of the box. Always specify that dimensions are given in Length × Width × Height.

Outside Dimensions (Important for Shipping & Storage)

• Measure the outer surfaces of the box including material thickness.
• Outside measurements are used for pallet stacking, warehouse spacing, and shipping compliance.

Material Thickness (Board Caliper)

• The thickness of the packaging material (e.g., corrugated board, rigid stock, cardstock).
• Impacts both the internal usable space and external dimensions.

Flap Measurements

• For boxes with flaps (e.g., mailer or shipping boxes), measure:
• Inner flaps: Ensure they meet in the middle without overlapping too much.
• Outer flaps: Allow proper sealing without gaps.

Tolerances

• Account for manufacturing tolerances (usually ±1/16" or ±2mm depending on material).
• Ensure the product fits without being too tight or loose.

Volume Capacity

• Calculate internal cubic capacity (L × W × H).
• Helps in determining how much space the product will occupy and shipping efficiency.

Product Orientation

• Decide how the product sits inside the box and measure accordingly.
• Orientation affects whether length or width is the primary dimension.

Die-Cut Openings or Windows

• Measure exact placement, height, and width for any cutouts.
• Ensure structural integrity when adding windows.

Printing Bleed & Safe Zones

• Include measurements for:
• Bleed area: Extra space beyond the cut line for printing.
• Safe zone: Inner area where critical text or logos should be placed.

Closure Type & Locking Tabs

• Measure slots, tabs, or locks for boxes with custom closures.
• Precision is required to avoid misalignment during assembly.

Packaging Style

• Folds, creases, and scores must be measured for accurate dieline creation.
• Different styles (e.g., RSC, tuck-end, mailer, sleeve) require specific panel measurements.