180 x 235 mm (140 x 195 x 40 mm) Cardboard Expandable Envelopes Peel and Seal Capacity Book Mailers/Card Mailers for Royal Mail Large Letter Small Parcel - 25pcs

• EXPANDABLE SGREAT PROTECTION - Protective cardboard mailers that could be used to protect books, brochures, calendars, cards, etc. Cardboard weight/thickness is 400gsmIZE - each cardboard envelope scored to expand to up to 40mm capacity, like a small box - Size when flat (180 x 235 mm) mm Size when loaded -140 x 195 x 40 mm
• EXPANDABLE SIZE - each cardboard envelope scored to expand to up to 40mm capacity, like a small box - Size when flat (180 x 235 mm) mm Size when loaded -140 x 195 x 40 mm
• SAVE TIME - Easy to use Peel & Seal close, and Rip & Strip open; Speed up packing times; Convenient for customers
• ECO-FRIENDLY - 100% RECYCLED AND RECYCLABLE - eco-friendly packaging made from recycled cartons
• VISIT US - See Our TGL UK Store For Other Sizes And Other Packaging Materials

These protective mailers are ideal for protecting books, brochures, calendars, etc. from scuffs and scrapes (not bending). They are often called Capacity Book Mailers, or Card Mailers. PIP - All cardboard mailers are sized to fit the Royal Mail Large Letter size limits (also known as Pricing In Proportion - PIP) and can be used to save on postage costs compared to using traditional box parcels. They are also lighter-weight compared to boxes. The 249mm x 352mm envelope is the largest available that fits within the Royal Mail Large Letter size limit. They are also handy for loose items that would otherwise bunch up in mailing bags, to ensure they will fit within Royal Mail's large letter size limits. These envelopes are made from strong 400gsm cards in natural manilla brown. Amazon often uses Cardboard Mailers like these for sending books and other small/thin items that are posted as large letter size, and are designed so they fit through most letterboxes. They have a peel & seal closure that are easy to close by the seller, and the receiver has a handy rip & strip opening, making it easy to open the package. 5 Sizes Available: 180mm x 235mm 194mm x 292mm 234mm x 334mm 249mm x 352mm