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1000 x Strong Grey Mailing Bags 12x14" (300x350mm)

Our 12x14 inch Grey Mailing Bags are a smart choice for businesses and home shippers who need reliable packaging for medium parcels. These durable plastic mailers keep your items safe from moisture and handling during transit. Designed to be strong yet lightweight, they help you pack securely while keeping postage costs low.
£51.95
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12x14 Inch Grey Mailing Bags – Ideal for Medium Parcels and Online Orders

The 12x14 inch Grey Mailing Bag is a trusted favourite for businesses and individuals who want strong, waterproof packaging for medium-sized items. Whether you’re shipping clothing, accessories, books, or boxed goods, these bags provide dependable protection during every stage of delivery. Made from premium-quality grey polyethylene, they are designed to be tear-resistant and weatherproof, ensuring your parcels arrive in great condition every time.

Perfect for eCommerce, Retail, and Personal Use

These mailing bags are especially popular with small retailers, online sellers, and marketplace vendors. The 12x14 inch size is ideal for posting folded garments, small boxes, or bundles of documents. Their plain grey finish gives a professional and discreet appearance, while the self-seal adhesive strip makes packing quick and secure without the need for extra tape or staples.

Durable, Lightweight, and Cost-Effective

Strength and efficiency go hand in hand with our grey mailing bags. Each bag is crafted from a high-tensile material that resists punctures and tears, keeping your contents protected against impact and moisture. Despite their durability, the bags remain extremely lightweight, helping you save on postage while maintaining a professional presentation for your brand or business.

Waterproof and Weather-Resistant Design

Rain, humidity, or long transit times won’t be an issue. These grey mailing bags feature a waterproof exterior that ensures your packages stay dry from dispatch to delivery. Their opaque colour also keeps the contents private, adding an extra layer of security for valuable or confidential shipments.

Eco-Friendly and Recyclable

Sustainability is a key consideration in modern packaging, and our grey mailing bags are fully recyclable. They can be reused or disposed of responsibly through standard recycling systems, allowing businesses to maintain a more eco-conscious shipping process without compromising on strength or reliability.

Why Experts Prefer Buying Grey Mailing Bags from Storage & Removal Boxes

Packaging professionals and online sellers across the UK choose Storage & Removal Boxes for quality, reliability, and service. Our grey mailing bags are carefully sourced to ensure consistency in strength and thickness, providing the level of protection you can depend on. Each product is tested for durability, sealing quality, and resistance to wear during transport.

At Storage & Removal Boxes, we understand that packaging isn’t just about wrapping an item; it’s about ensuring your product reaches the customer exactly as intended. That’s why our 12x14 inch grey mailing bags are trusted by online shops, courier services, and warehouse teams who value a no-compromise approach to packaging performance.

Common Uses for 12x14 Inch Grey Mailing Bags

  • Clothing and apparel – t-shirts, jumpers, or folded garments
  • Documents and magazines that need waterproof protection
  • Small boxed products like electronics or beauty items
  • Accessories such as belts, scarves, or small gifts
  • Postal returns or replacement items

Tips for Efficient Packing

To get the best results, always remove excess air before sealing your bag to avoid bulging. Use the built-in adhesive strip for a tight closure, and label clearly using permanent marker or an attached label. For extra fragile items, consider adding bubble wrap or cardboard stiffeners before sealing.

Trusted UK Supplier of Mailing Bags

Storage & Removal Boxes has become a preferred choice for packaging supplies across the UK, offering high-quality products that meet the needs of both personal and business users. With fast delivery, competitive pricing, and consistent product quality, we make it easier for customers to find reliable packaging they can count on.

Order Your Grey Mailing Bags Today

Whether you need a few packs for personal use or bulk quantities for your eCommerce store, Storage & Removal Boxes makes ordering simple. Our 12x14 inch grey mailing bags combine strength, protection, and value, making them the smart choice for modern shipping needs. Place your order online today and see why businesses across the UK trust us for their packaging essentials.