{"product_id":"board-backed-envelopes","title":"Board Backed Envelopes","description":"\u003cp\u003eOur \u003cb\u003eBoard Backed Envelopes\u003c\/b\u003e (also known as rigid board back envelopes, hard backed mailers, or \"Do Not Bend\" envelopes) are purpose-built for UK businesses, online sellers, artists, photographers, and professional services to deliver robust, affordable protection for flat or semi-rigid items that must remain crease-free and undamaged during postal or courier transit.\u003c\/p\u003e\n\u003cp\u003eConstructed with a strong grey board backing laminated to a durable 120gsm manilla or kraft paper front, these envelopes provide exceptional resistance to bending, crushing, folding, and impacts—far outperforming standard paper or padded envelopes for sensitive contents.\u003c\/p\u003e\n\u003cp\u003eKey features and benefits include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eOutstanding rigid protection\u003c\/b\u003e — The solid board back prevents flexing, creasing, or damage from rough handling, automated sorting, conveyor systems, or multi-drop journeys, making them ideal for photos, prints, artwork, certificates, important documents, brochures, catalogues, greeting cards, or thin calendars that need to arrive pristine.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRoyal Mail Large Letter optimisation\u003c\/b\u003e — Popular sizes are designed to fit within \u003cb\u003eRoyal Mail Large Letter\u003c\/b\u003e limits (max 353 × 250 × 25mm, up to 750g), enabling lower letter-rate postage instead of parcel fees—crucial for cost control on platforms like eBay, Etsy, Amazon, or your own site. Common options include C5 (229 × 162mm for A5 or folded A4), C4 (324 × 229mm for full A4 sheets), and slightly undersized variants like 352 × 249mm or 324 × 229mm to maximise savings while often qualifying as Large Letter rather than Small Parcel.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eVersatile for everyday UK mailing\u003c\/b\u003e — Perfect for sending A5 cards, A4 documents\/artwork, A3 prints (in larger C3 sizes like 457 × 324mm), photographs, certificates, legal papers, or marketing materials. Many feature a shallow gusset or expandable design (up to 20–45mm) to accommodate slight thickness variations without compromising the flat profile.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSimple and efficient packing\u003c\/b\u003e — Supplied flat for space-efficient storage; quick to load with peel-and-seal adhesive strips (self-adhesive\/hot-melt) for fast, secure, tape-free closure in busy fulfilment centres, offices, or home-based operations. Often include easy-open tear strips or rip tabs for customer convenience and a smooth unboxing experience.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eProfessional \"Please Do Not Bend\" branding\u003c\/b\u003e — Printed with prominent red \"Please Do Not Bend\" warnings on the front to alert handlers; available in natural manilla brown (traditional and eco-friendly look) or bright white finishes for a clean, premium appearance. \n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEco-friendly and sustainable\u003c\/b\u003e — Made from responsibly sourced, fully recyclable materials (frequently with post-consumer recycled content in the board and paper), aligning with UK sustainability goals and helping your business reduce environmental impact without sacrificing durability.\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eReliable carrier performance\u003c\/b\u003e — Compatible with major UK services including Royal Mail (Large Letter or Small Parcel tiers), Parcelforce, Evri, DPD, Yodel, UPS, and DHL—minimising damage risks, claims, or returns.\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBest suited for non-fragile, flat items requiring bend resistance, such as documents, prints, and photos. For bulkier books, greater thickness, or enhanced cushioning needs, explore our book mailer envelopes, rigid boxes, or custom options.\u003c\/p\u003e\n\u003cp\u003eChoose our board backed envelopes for dependable, low-cost packaging that safeguards important items, optimises postage savings, streamlines your dispatch process, and ensures a professional delivery.\u003c\/p\u003e","brand":"BoxPac","offers":[{"title":"162 x 114mm \/ Brown","offer_id":53351677001992,"sku":"BP2001","price":14.8,"currency_code":"GBP","in_stock":true},{"title":"229 x 162mm \/ Brown","offer_id":56304272605448,"sku":"BP2002","price":10.42,"currency_code":"GBP","in_stock":true},{"title":"229 x 162mm \/ White","offer_id":56304272638216,"sku":"BP2003","price":12.03,"currency_code":"GBP","in_stock":true},{"title":"324 x 229mm \/ Brown","offer_id":56304272670984,"sku":"BP2004","price":17.35,"currency_code":"GBP","in_stock":true},{"title":"324 x 229mm \/ White","offer_id":56304272703752,"sku":"BP2005","price":19.43,"currency_code":"GBP","in_stock":true},{"title":"457 x 324mm \/ Brown","offer_id":56304272736520,"sku":"BP2006","price":14.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1022\/1571\/3032\/files\/board-backed-envelopes-5.jpg?v=1771518831","url":"https:\/\/www.boxpac.net\/products\/board-backed-envelopes","provider":"BoxPac","version":"1.0","type":"link"}