Custom Seal End Boxes

Designed for Strength and Speed

Seal end boxes are ideal for automated packaging and manual sealing alike. Their strong structure makes them perfect for food, cosmetics, and retail-ready products.

Materials

Our materials ensure both protection and print quality:

• Corrugated Cardboard – Heavy-duty and great for shipping
• SBS (Solid Bleached Sulfate) – Smooth finish ideal for high-end printing
• Kraft Paperboard – Natural and recyclable for eco-conscious brands
• Recycled Chipboard – Sustainable and suitable for lightweight products

Sizes

Fully customizable to meet your product’s dimensions:

• Slim formats for pharmaceutical or beauty items
• Medium and large sizes for electronics or frozen foods
• Fits flat-packed or assembled depending on your needs

Printing

High-quality printing turns your box into a marketing asset:

• Full-color CMYK or Pantone printing
• Product instructions, batch info, or safety warnings
• Gloss, matte, and soft-touch finishes

All prints are done using non-toxic, fade-resistant inks for long-lasting clarity.

Add-ons

Boost the appeal and functionality of your seal end box:

• Perforated edges or easy-tear strips
• Window cutouts with protective film
• Embossed logos or foil stamping
• Internal trays, partitions, or product holders

Types of Seal End Boxes

Engineered for retail and shipping across various industries:

• Frozen Food and Dry Goods Packaging
• Pharmaceutical or Medical Boxes
• Cosmetic and Skincare Packaging
• Electronics and Accessory Boxes
• Retail Shelf-Ready Packaging

3Ps of Seal End Box Packaging

• Presentation
  Your product looks professional with clean folds, sharp graphics, and sealed edges—ready for the shelf or display.
• Preservation
  Sturdy board and secure flaps protect contents from moisture, light, and handling damage.
• Protection
  A sealed end adds a layer of tamper resistance while holding up during shipping, stacking, and transit.

Go Premium with Enhanced Features

Take your seal end boxes to the next level:

• Spot UV and foil stamping for visual impact
• Custom die-cut shapes or unique folds
• Extra lamination for scratch and moisture resistance

Why Choose Custom Boxes Lab?

We manufacture seal end boxes that meet the demands of commercial packaging while providing flexible branding solutions.

• Free design help and structural templates
• Fast lead times and nationwide delivery
• Short runs and wholesale options available
• Eco-friendly printing and recyclable materials
• Reliable support from packaging experts

Get a Quote Today

Need packaging that performs under pressure?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.