• Double Walled Cardboard Boxes

SKU: 181820DW15

Cardboard Boxes

Cardboard Boxes Double Wall - 18" x 18" x 20" (457mm x 457mm x 508mm) Pack of 15

Cardboard Boxes Double Wall - 18" x 18" x 20" (457mm x 457mm x 508mm) Pack of 15

Sale Sold out Pre-order
£41.40
£41.40

In stock

Colour: Brown
Size (Length x Width x Depth): 18" x 18" x 20"
Quantity: 15 Boxes Per Pack (£2.76/Box)
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Tape Description
Features & Benefits
Delivery Information

  • Extra-Tall Double Wall Cardboard Boxes for Oversized Shipments
    These Cardboard Boxes Double Wall are designed for tall and bulky items that demand maximum protection during shipping and storage. Constructed from durable double wall corrugated cardboard, they provide excellent rigidity, stacking strength, and durability. Supplied in a Pack of 15, they are perfect for warehouse, industrial, and high-volume packing operations.

  • Reinforced Strength for Heavy or Fragile Goods
    The 18" x 18" x 20" cardboard boxes withstand compression, impact, and movement during transit. As heavy-duty double wall boxes, they are ideal for oversized equipment, multi-item consignments, fragile products, and large parcels requiring reinforced packaging.

  • Generous Extra-Tall Cube Format for Maximum Capacity
    Each double wall cardboard box measures 457mm x 457mm x 508mm, offering an extra-tall cube that maximises internal storage while remaining practical for stacking and transport. The Pack of 15 large boxes supports organised storage and efficient packing workflows.

  • Quick Assembly with Professional Finish
    These reinforced cardboard boxes assemble easily and maintain their shape once sealed. The smooth exterior surface allows for clear labelling, barcoding, and secure sealing with packaging tape, ensuring a neat and professional appearance.

  • Cost-Effective Heavy-Duty Packaging Solution
    Choosing the Cardboard Boxes Double Wall 18" x 18" x 20" Pack of 15 provides a reliable and economical solution for businesses shipping oversized or extra-tall parcels. These strong corrugated cardboard boxes combine durability, efficiency, and long-term value.

Features

  • Heavy-Duty Double-Walled Construction: Made from strong, reinforced corrugated cardboard for maximum durability.
  • Protective and Shock-Absorbent: Provides superior resistance to crushing, punctures, and impact during transit.
  • Lightweight Yet Robust: Combines strength with ease of handling for efficient packing and transportation.
  • Versatile Sizes Available: Suitable for a wide range of shipping, storage, and moving needs.
  • Eco-Friendly Material: Made from recyclable cardboard for sustainable packaging.
  • Stackable Design: Supports safe stacking during storage or transport without compromising structural integrity.

Benefits

  • Superior Protection for Contents: Double-walled construction ensures items remain safe from damage during shipping or moving.
  • Reliable and Durable: Resistant to crushing, punctures, and general wear, reducing the risk of product loss.
  • Easy to Handle and Use: Lightweight design allows quick packing, lifting, and transporting.
  • Versatile for Multiple Applications: Ideal for shipping, storage, moving, and warehouse operations.
  • Cost-Effective Packaging Solution: Durable construction reduces product damage and replacement costs.
  • Eco-Friendly and Sustainable: Recyclable cardboard supports environmentally responsible packaging practices.
  • Efficient Storage and Transport: Stackable design optimises space and enhances warehouse or transport organisation.

We provide reliable delivery services across the UK, offering a variety of options to suit your needs. Most products are available for nationwide delivery via carrier, while some items may be marked for collection only or limited to local delivery within a 50-mile radius. Delivery costs vary based on factors such as the total weight of your order and selected service.

Delivery Options:
• Standard Delivery (2–3 Working Days): Available across the UK.
• Next Day Delivery (1 Working Day): Available across the UK. Order before 12pm for same-day dispatch.
• Local Delivery (1–3 Working Days): Available within a 50-mile radius of our location.
• Collection: Open to all customers across the UK.
• Bulk Delivery: Available nationwide. Contact us directly for pricing on large orders.
• Free Delivery: Available on selected products with orders over £450 (excluding VAT).

Please note: All delivery options are subject to stock availability. For more information or assistance, feel free to contact our team.

Tape Description

Features & Benefits

Delivery Information

  • Dimensions (Smallest Size)

    Internal Length: 18" (457mm)
    Internal Width: 18" (457mm)
    Internal Depth: 20" (508mm)

  • Product Type

    Cardboard Boxes

  • Material

    Corrugated Cardboard

  • Weight

    N/A

  • Quantity

    15 or 90 Boxes Per Pack

  • Colour

    Brown

  • Strength

    Double Walled

  • Bulk Discount Available

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Double Wall Cardboard Boxes for Strong, Reliable Protection

  • Shipping heavy items such as tools, machinery parts, books, and bulk products that require added strength.

  • E-commerce packaging for high-value orders that need extra protection against handling and courier impact.

  • Warehouse storage for stacked goods, offering increased crush resistance and long-term durability

  • Reinforced stacking on pallets for improved load stability during transport and storage

  • Moving home or office items, especially heavier contents like files, kitchenware, or equipment
Cardboard box with 'Fragile' labels on a wooden floor
Open cardboard box on a light wooden floor

Cardboard Boxes - FAQ

Find answers to common question about double walled cardboard boxes

Double-walled cardboard boxes are made from two layers of corrugated fluting sandwiched between liner boards. This construction provides extra strength, durability, and load protection compared to single-walled boxes.

They are ideal for:

  • Heavy or bulky items
  • Fragile goods requiring extra protection
  • Palletised shipments
  • Long-distance or export shipping
  • Stacking goods in warehouses or storage
  • Double-walled boxes: Two fluted layers, higher strength, better stacking and crush resistance
  • Single-walled boxes: One fluted layer, lighter, suitable for lighter products

Double-walled boxes offer greater protection and durability.

Common flute combinations include:

  • BC flute – very strong, excellent stacking strength
  • EB flute – smoother finish with good strength
  • AC flute – heavy-duty industrial applications

Can’t Find the Right Cardboard Box? We’ll Source It for You.

1

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2

We’ll Do the Research

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3

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We’ll respond promptly with availability, pricing, and lead times.

  • Our Story

    At Reynopoly Ltd, we are passionate about providing high-quality packaging solutions that help businesses across the UK thrive. Since our founding, we have focused on serving sectors such as retail, food, and industry, delivering products that protect, present, and promote our clients’ goods. Our goal has always been to combine functionality with sustainability, giving our customers packaging solutions they can trust.

  • Our Products

    We specialize in a wide range of packaging materials, including polythene bags, bubble wrap, pallet wrap, and protective packaging. Sustainability is a core part of our business, and we offer eco-friendly options such as biodegradable tapes, recyclable mail bags, and paper-based void fill materials. Every product we provide meets strict quality standards, including BRC certification for food-safe packaging, ensuring reliability for our clients’ most important shipments.

  • Our Commitment

    At Reynopoly, customer satisfaction is our top priority. We work closely with businesses of all sizes, from small startups to large enterprises, to deliver tailored solutions that meet their unique packaging needs. Our team provides fast quotations, responsive support via phone, email, and WhatsApp, and guidance to help businesses select the best materials for their operations.

  • Our Location

    Operating from our facility in Peterborough, at Polythene Place, Newark Road, Eastern Industry, PE1 5YD, we provide nationwide delivery across the UK. Our central location allows us to serve our clients efficiently while maintaining a strong focus on quality, sustainability, and customer service. At Reynopoly, we’re more than a packaging supplier—we’re a partner in your business’s growth and success.

Packaging Supplies to Fit Your Needs

  • Packaging Supplies to Fit Your Needs

  • Reynopoly

    Stock Holding

    We provide a stock holding service for up to 3 months - Contact us

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    Fast & Free Delivery

    Enjoy quick delivery with a variety of flexible shipping options - Learn more

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    Custom Packaging

    Bespoke products tailored to meet your requirements - Learn more

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    Eco-Friendly Options

    Protect your products while making a positive impact on the planet - Shop now

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    Bulk Pricing Available

    Enjoy greater savings when you purchase larger quantities - Contact us

  • Reynopoly

    BRCGS Certified

    Ensuring the highest standards of food safety and quality - Learn more
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