• Single Walled Cardboard Boxes

SKU: 18123SW25

Cardboard Boxes

Cardboard Boxes Single Wall - 18" x 12" x 3" (457mm x 305mm x 76mm) Pack of 25

Cardboard Boxes Single Wall - 18" x 12" x 3" (457mm x 305mm x 76mm) Pack of 25

Sale Sold out
£15.50
£15.50

In stock

Colour: Brown
Size (Length x Width x Depth): 18" x 12" x 3"
Quantity: 25 Boxes Per Pack (£0.62/Box)
View the full product details
Tape Description
Features & Benefits
Delivery Information

  • Extra-Wide Single Wall Cardboard Boxes for Shallow Items
    These Cardboard Boxes Single Wall are designed for packing and shipping wide, low-profile products securely. Manufactured from quality single wall corrugated cardboard, they offer dependable protection while staying lightweight and easy to handle. Supplied in a Pack of 25, they are ideal for e-commerce, retail, and warehouse use.

  • Lightweight Strength for Everyday Dispatch
    The 18" x 12" x 3" Cardboard Boxes provide reliable performance for daily packaging tasks. As single wall cardboard boxes, they are well suited to books, documents, clothing, printed materials, and flat-packed items that require a shallow carton with broad coverage.

  • Space-Efficient Design for Shipping and Storage
    Each Cardboard Box measures 457mm x 305mm x 76mm, helping to minimise wasted space and reduce shipping volume. The Pack of 25 Single Wall Boxes supports efficient storage, organised shelving, and streamlined fulfilment operations.

  • Quick Assembly with Professional Finish
    These single wall cardboard boxes assemble easily and maintain a clean, professional appearance once sealed. Their smooth surface allows for clear labelling, branding, and secure closure using standard packaging tape.

  • Cost-Effective Bulk Packaging Solution
    Purchasing the Pack of 25 Cardboard Boxes Single Wall 18" x 12" x 3" is a practical and economical choice for businesses shipping flat parcels regularly. These wide shallow cardboard boxes deliver efficiency, durability, and excellent value for everyday packaging needs.

Features

  • Lightweight Single-Walled Construction: Made from durable corrugated cardboard for everyday packaging needs.
  • Protective Design: Provides basic resistance to impact, crushing, and handling during shipping or storage.
  • Versatile Sizes Available: Suitable for a wide range of parcel, storage, and moving requirements.
  • Eco-Friendly Material: Made from recyclable cardboard for sustainable packaging solutions.
  • Stackable and Organised: Supports stacking without compromising the integrity of the boxes.
  • Easy to Handle: Lightweight design allows quick packing, lifting, and transport.

Benefits

  • Protects Contents During Transit: Single-walled construction safeguards items from minor impacts and handling.
  • Lightweight and Easy to Use: Simplifies packing and reduces lifting effort, improving efficiency.
  • Cost-Effective Packaging Solution: Ideal for standard shipping and storage without unnecessary expense.
  • Versatile Applications: Perfect for moving, storage, shipping, and general warehouse use.
  • Environmentally Friendly: Recyclable cardboard reduces environmental impact.
  • Stackable for Space Efficiency: Organises storage and transport while optimising warehouse or vehicle space.
  • Reliable and Practical: Provides dependable protection for a wide range of everyday packaging needs.

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: 12" (305mm)
    Internal Depth: 3" (76mm)

  • Product Type

    Cardboard Boxes

  • Material

    Corrugated Cardboard

  • Weight

    N/A

  • Quantity

    25 or 800 Boxes Per Pack

  • Colour

    Brown

  • Strength

    Single Walled

  • Bulk Discount Available

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← Swipe to see more →
Image Variant SKU Price Availability
Brown / 18" x 12" x 3" / 25 Boxes Per Pack (£0.62/Box)
Brown / 18" x 12" x 3" / 25 Boxes Per Pack (£0.62/Box)
 18123SW25
£15.50
—
● In stock
Brown / 18" x 12" x 3" / 800 Boxes Per Pallet (£0.40/Box)
Brown / 18" x 12" x 3" / 800 Boxes Per Pallet (£0.40/Box)
 18123SW800
£322.00
—
● In stock

Single Wall Cardboard Boxes – Reliable Packaging for Shipping & Storage

  • General-purpose storage boxes for home, garage, or workplace use

  • General-purpose storage boxes for home, garage, or workplace use

  • Moving household items, including linens, clothing, and pantry goods

  • E-commerce packaging for everyday orders and standard deliveries

  • Shipping lightweight to medium-weight items such as clothing, books, toys, and non-fragile goods
Cardboard box with 'Fragile' labels on a wooden floor
Open cardboard box on a light wooden floor

  • Cardboard Box Features:

  • Person packing a ceramic item into a cardboard box with bubble wrap.

    Lightweight and Reliable Single Wall Construction

    Single walled cardboard boxes are manufactured with one layer of corrugated board, offering dependable strength for everyday packaging needs. They provide a practical balance between durability and weight, making them ideal for shipping lighter goods and non-fragile items.

  • Open cardboard boxes on a light wooden floor

    Perfect for E-Commerce, Storage, and Shipping

    Designed for efficiency, single wall boxes are easy to assemble, stack, and handle. Their lightweight structure helps reduce shipping costs while still offering adequate protection for retail products, documents, clothing, and general merchandise.

  • Stack of cardboard boxes on a wooden floor

    Recyclable and Cost-Effective Packaging Solution

    Made from recyclable cardboard materials, single walled boxes support sustainable packaging practices. They are an economical choice for businesses seeking environmentally friendly packaging without compromising on performance or presentation.

Cardboard Boxes - FAQ

Find answers to common questions about single walled cardboard boxes

Single-walled cardboard boxes are made from one layer of corrugated fluting between two liner boards. They are lightweight, cost-effective, and versatile, making them one of the most commonly used packaging solutions.

They are ideal for:

  • Light to medium-weight products
  • General shipping and storage
  • E-commerce orders
  • Retail and postal packaging
  • Office and warehouse use
  • Single-walled boxes: One fluted layer, lighter and more economical
  • Double-walled boxes: Two fluted layers, stronger and better for heavy loads

Single-walled boxes are best suited for everyday packing needs.

Common flute types include:

  • B flute – strong, good stacking strength
  • C flute – excellent cushioning and protection
  • E flute – thinner, ideal for retail or postal boxes

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

1

Submit Your Request

Provide the details of the product, specification, or solution you require.

2

We’ll Do the Research

Our team will source options through our trusted network of suppliers.

3

Receive Your Options

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

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    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

    BRC Certified

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