{"product_id":"custom-printed-sample-mailer-postal-boxes-375x255x150mm","title":"Customised Printed Mailer Postal Boxes - 375x255x150mm Printed Sample","description":"\u003ch2 class=\"producth2\"\u003eFull-Colour Personalised 375x255x150mm Mailer Box Sample\u003c\/h2\u003e\n\u003cp\u003eIf you’d like extra reassurance before committing to a full run, you can order a full-colour printed sample of your cardboard box. This allows you to check the print clarity, colours and overall finish hands-on. Should you proceed with a full order using the same artwork, we’ll refund the cost of your sample in full. Please note that approval proofs are not provided when ordering a single printed sample.\u003c\/p\u003e\n\u003cul class=\"productbullets\"\u003e\n\u003cli\u003e\n\u003cspan class=\"bold\"\u003eVibrant full-colour print:\u003c\/span\u003e Add your logo, artwork or message in crisp digital colour for instant brand recognition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"bold\"\u003eRoyal Mail Small Parcel friendly:\u003c\/span\u003e The 375x255x150mm internal size is designed to fall within Royal Mail’s Small Parcel category.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"bold\"\u003eStrong mailer-style protection:\u003c\/span\u003e Triple-layer corrugated kraft board gives reliable strength for posting a wide range of products.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"bold\"\u003eProfessional unboxing feel:\u003c\/span\u003e A smooth kraft surface and clean structure help elevate presentation for retail and subscription orders.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"bold\"\u003eSupplied flat-packed:\u003c\/span\u003e Saves valuable storage space and keeps your packing area tidy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"bold\"\u003eQuick, secure assembly:\u003c\/span\u003e Folding tabs and flaps lock firmly into place for a tamper-resistant seal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"bold\"\u003ePrinted proof \u0026amp; satisfaction guarantee:\u003c\/span\u003e Approve a full printed sample of your 375x255x150mm mailer box before full production.*\u003cbr\u003e\u003cspan class=\"font10\"\u003e*Please note this excludes printed single sample orders.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"bold\"\u003eFast UK turnaround:\u003c\/span\u003e Printed and delivered in as little as a few days to keep orders moving.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"bold\"\u003eUK made \u0026amp; printed:\u003c\/span\u003e Manufactured and printed in the UK to reduce transport mileage and carbon footprint.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"bold\"\u003eFSC® certified materials:\u003c\/span\u003e Produced using responsibly sourced board with 60%–90% recycled content.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"bold\"\u003eSize guide:\u003c\/span\u003e Small parcel mailer postal box sizes (375x255x150mm) shown are the internal dimensions: \u003cspan class=\"bold\"\u003eWidth x Depth x Height\u003c\/span\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"bold\"\u003ePlease note:\u003c\/span\u003e Minor branding or barcodes may appear on parts of the 375x255x150mm mailer boxes. Images shown are for guidance only and the supplied product may differ slightly.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"bold\"\u003eDue to manufacturing tolerances, actual item dimensions may vary by 10–20mm. If sizing accuracy is essential, we recommend ordering a sample before placing a larger order.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 class=\"producth3\"\u003eAuthentic Product Photography\u003c\/h3\u003e\n\u003cp\u003eAll images displayed on Parcelsend UK represent genuine printed jobs we have produced. No visuals on this page are created or enhanced using AI - every photograph is taken from real customer orders to give you an honest representation of print quality and finish.\u003c\/p\u003e","brand":"Parcelsend UK","offers":[{"title":"White E-Flute \/ Outside Top Only","offer_id":56154839155063,"sku":"MCP-PIP375WH-RM-SAM-POT-PSUK","price":20.0,"currency_code":"GBP","in_stock":true},{"title":"White E-Flute \/ Outside Front Flap Only","offer_id":56154839187831,"sku":"MCP-PIP375WH-RM-SAM-POF-PSUK","price":20.0,"currency_code":"GBP","in_stock":true},{"title":"White E-Flute \/ Inside Only","offer_id":56154839220599,"sku":"MCP-PIP375WH-RM-SAM-PI-PSUK","price":20.0,"currency_code":"GBP","in_stock":true},{"title":"White E-Flute \/ Outside Top \u0026 Outside Front Flap","offer_id":56154839253367,"sku":"MCP-PIP375WH-RM-SAM-POTF-PSUK","price":25.0,"currency_code":"GBP","in_stock":true},{"title":"White E-Flute \/ Outside Top \u0026 Inside","offer_id":56154839286135,"sku":"MCP-PIP375WH-RM-SAM-POTI-PSUK","price":25.0,"currency_code":"GBP","in_stock":true},{"title":"White E-Flute \/ Outside Front Flap \u0026 Inside","offer_id":56154839318903,"sku":"MCP-PIP375WH-RM-SAM-POFI-PSUK","price":25.0,"currency_code":"GBP","in_stock":true},{"title":"White E-Flute \/ Outside Top \u0026 Outside Front Flap \u0026 Inside","offer_id":56154839351671,"sku":"MCP-PIP375WH-RM-SAM-P3-PSUK","price":30.0,"currency_code":"GBP","in_stock":true},{"title":"Brown \/ Kraft E-Flute \/ Outside Top Only","offer_id":56154839384439,"sku":"MCP-BSPB-13-SAM-POT-PSUK","price":20.0,"currency_code":"GBP","in_stock":true},{"title":"Brown \/ Kraft E-Flute \/ Outside Front Flap Only","offer_id":56154839417207,"sku":"MCP-BSPB-13-SAM-POF-PSUK","price":20.0,"currency_code":"GBP","in_stock":true},{"title":"Brown \/ Kraft E-Flute \/ Inside Only","offer_id":56154839449975,"sku":"MCP-BSPB-13-SAM-PI-PSUK","price":20.0,"currency_code":"GBP","in_stock":true},{"title":"Brown \/ Kraft E-Flute \/ Outside Top \u0026 Outside Front Flap","offer_id":56154839482743,"sku":"MCP-BSPB-13-SAM-POTF-PSUK","price":25.0,"currency_code":"GBP","in_stock":true},{"title":"Brown \/ Kraft E-Flute \/ Outside Top \u0026 Inside","offer_id":56154839515511,"sku":"MCP-BSPB-13-SAM-POTI-PSUK","price":25.0,"currency_code":"GBP","in_stock":true},{"title":"Brown \/ Kraft E-Flute \/ Outside Front Flap \u0026 Inside","offer_id":56154839548279,"sku":"MCP-BSPB-13-SAM-POFI-PSUK","price":25.0,"currency_code":"GBP","in_stock":true},{"title":"Brown \/ Kraft E-Flute \/ Outside Top \u0026 Outside Front Flap \u0026 Inside","offer_id":56154839581047,"sku":"MCP-BSPB-13-SAM-P3-PSUK","price":30.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0437\/0094\/5064\/files\/customised-printed-mailer-boxes-375x255x150mm-mixed.jpg?v=1763565245","url":"https:\/\/parcelsend.uk\/products\/custom-printed-sample-mailer-postal-boxes-375x255x150mm","provider":"Parcelsend UK","version":"1.0","type":"link"}