Jampak Listing

Item Description

A4+ & A3+ oversized to fit C4 C3 envelopes perfectly. NO MORE DENTED CORNERS!!

Heavy-duty 800-micron backing boards designed to fit perfectly inside C4 and C3 envelopes. Made from strong, off-white card, these boards provide excellent rigidity to protect prints, documents, and artwork during postage. A reliable, professional choice for photographers, artists, and businesses who want their items to arrive flat and undamaged.


A4+  = 305x218mm with C4 perfectly

A3+  = 436x305mm with C3 perfectly


Key Features

  • 800-micron (≈ 0.8 mm) thick board – sturdy and durable for postal protection

  • Perfect fit for C4 & C3 envelopes – oversized A4 / A3 to perfectly fit inside C4/C3 Envelopes

  • Smooth, off-white finish – professional presentation and easy to label

  • Pre-cut convenience – saves trimming time and ensures consistent sizing

  • Made in the UK – high-quality recycled fibreboard

Specifications

  • Material: Off-white backing board

  • Thickness: 800 microns (≈ 0.8 mm)

  • Sizes - A4+  = 305x218mm with C4 perfectly

     A3+  = 436x305mm with C3 perfectly

  • Colour: Off-white / natural

  • Finish: Smooth on both sides

Postage Options

  • Free Standard Royal Mail Delivery (including Highlands, Islands, and Northern Ireland)
  • FedEx Next Day Delivery available at checkout (UK mainland only – surcharge may apply for Isles and remote areas)
  • We currently only ship within the United Kingdom

Return Policy

Returns accepted within 30 days. Items must be unused and in original packaging. We’ll replace or refund upon receipt. Contact us if anything arrives damaged — we’re happy to help.