Max Slim Large Letter Brown PIP Postal Boxes – 333x123x20mm – Maximum Slim Large Letter – Royal Mail

Our Maximum Slim Large Letter Brown PIP Postal Boxes are cleverly designed to adhere to the Royal Mail’s Pricing in Proportion (PIP) standards, ensuring they’re slim enough to pass through the 25mm slot and qualify as a Large Letter.

The boxes are made from strong but light brown cardboard. You might need to use tape to keep the box flaps closed and make sure your items stay safe inside.

• Qualifies As a Large Letter
• Quick and easy to assemble
• Fully recyclable
• Single Wall Brown Cardboard Boxes / brown corrugated cardboard (delivered flat-packed)
• These boxes are ideal for sending  loose items up to 750 G
• Fast & Free Delivery to the UK Mainland (See Delivery section for more information)
• Internal Dimensions (mm) – 333 x 123 x 20mm
• External Dimensions(mm) – 350 x 127 x 22mm

Sizes Available (Internal):

C4 Pip Boxes- Large Letter Boxes – 320mm x 230mm x 20mm

C5 Pip Boxes- Large Letter Boxes – 218mm x 159mm x 20mm

C6 Pip Boxes- Large Letter Boxes – 112mm x 163mm x 20mm

C7 Pip Boxes – Large Letter Boxes – 101mm x 101mm x 20mm