50 x C6 A6 SIZE BOX LARGE LETTER STRONG CARDBOARD SHIPPING MAILING POSTAL PIP ☆ SIZE 16cm x 12cm x 2.2cm ☆ 6.5" x 4.5" x 0.8" FAST DELIVERY : Amazon.co.uk: Stationery
New Plain Single Wall A3 Size Boxes - 458mm x 305mm x 178mm – Sadlers
100 x C4 A4 Pip Box Shipping Mail Postal Large Letter Boxes Size: 335x230x23mm, V_BX-C4-BRW-100 : Amazon.co.uk: Stationery & Office Supplies
350x250x160mm Royal Mail Small Parcel Cardboard Boxes
MAXIMUM SMALL PARCEL SIZE ROYAL MAIL BOXES SHIPPING POSTAL 45cm x 35cm x 16cm | eBay
24x18x18" Medium Parcel Maximum size (Double wall) Royal Mail Cardboard Boxes Postal Packing -
Pack of 5 - Medium Cardboard Packing Boxes - Home Storage from PlasticBoxShop UK