{"title":"Board Back Envelope Mailers","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWhen sending important documents, photographs, certificates, and flat items, choosing the right packaging is essential. \u003c\/span\u003e\u003cstrong\u003eBoard back envelopes\u003c\/strong\u003e\u003cspan\u003e are one of the most trusted mailing solutions for businesses and individuals across the United Kingdom. Designed with a rigid backing board, these envelopes help protect contents from bending, creasing, and damage during transit.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eWhether you are posting contracts, marketing materials, artwork, or educational documents, quality\u003cstrong\u003e \u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003eboard-backed envelopes\u003c\/strong\u003e\u003cspan\u003e provide added protection while maintaining a professional appearance. Their durable construction ensures that items arrive in excellent condition, helping businesses maintain customer satisfaction and reduce the risk of damaged deliveries.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","products":[{"product_id":"114-x-162-mm-board-back-envelope-a6-c6","title":"114 x 162mm Board Back Envelope (A6 \/ C6)","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThese peel and seal board back envelopes are designed to protect A6-sized and smaller contents from bending, creasing and damage during posting. Suitable for mailing photos, small prints, important documents and collectable gaming cards or trading cards. Each envelope features a clear red “Please Do Not Bend” caption to alert handlers to take extra care during delivery.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e📐A6 Size: 114 x 162 mm (4.5” x 6.4”)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e✨Board back design helps keep contents flat and protected in transit\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e🔒 Peel and seal closure for fast, secure and hassle-free packing\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e❗\u003c\/span\u003e\u003cspan\u003eRed “Please Do Not Bend” warning clearly alerts handlers to take extra care\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e♻️ \u003c\/span\u003e\u003cspan\u003eRecyclable material for a more environmental-friendly packaging choice\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystal Mailing","offers":[{"title":"10 @ £3.00 (£300.00 per 1000) \/ Brown \/ 114 x 162 mm (4.5” x 6.4”)","offer_id":56666972717442,"sku":"BdBkEnv-Brn-114x162(A6)_10","price":3.0,"currency_code":"GBP","in_stock":true},{"title":"25 @ £3.50 (£140.00 per 1000) \/ Brown \/ 114 x 162 mm (4.5” x 6.4”)","offer_id":56666972750210,"sku":"BdBkEnv-Brn-114x162(A6)_25","price":3.5,"currency_code":"GBP","in_stock":true},{"title":"50 @ £5.00 (£100.00 per 1000) \/ Brown \/ 114 x 162 mm (4.5” x 6.4”)","offer_id":56666972782978,"sku":"BdBkEnv-Brn-114x162(A6)_50","price":5.0,"currency_code":"GBP","in_stock":true},{"title":"100 @ £7.80 (£78.00 per 1000) \/ Brown \/ 114 x 162 mm (4.5” x 6.4”)","offer_id":56666972815746,"sku":"BdBkEnv-Brn-114x162(A6)_100","price":7.8,"currency_code":"GBP","in_stock":true},{"title":"125 @ £9.50 (£76.00 per 1000) \/ Brown \/ 114 x 162 mm (4.5” x 6.4”)","offer_id":56666972848514,"sku":"BdBkEnv-Brn-114x162(A6)_125","price":9.5,"currency_code":"GBP","in_stock":true},{"title":"250 @ £14.30 (£57.20 per 1000) \/ Brown \/ 114 x 162 mm (4.5” x 6.4”)","offer_id":56666972881282,"sku":"BdBkEnv-Brn-114x162(A6)_250","price":14.3,"currency_code":"GBP","in_stock":true},{"title":"500 @ £24.50 (£49.00 per 1000) \/ Brown \/ 114 x 162 mm (4.5” x 6.4”)","offer_id":56666972914050,"sku":"BdBkEnv-Brn-114x162(A6)_500","price":24.5,"currency_code":"GBP","in_stock":true},{"title":"1000 @ £46.70 (£46.70 per 1000) \/ Brown \/ 114 x 162 mm (4.5” x 6.4”)","offer_id":56666972946818,"sku":"BdBkEnv-Brn-114x162(A6)_1000","price":46.7,"currency_code":"GBP","in_stock":true},{"title":"2000 @ £90.30 (£45.15 per 1000) \/ Brown \/ 114 x 162 mm (4.5” x 6.4”)","offer_id":56666972979586,"sku":"BdBkEnv-Brn-114x162(A6)_2000","price":90.3,"currency_code":"GBP","in_stock":true},{"title":"4000 @ £171.60 (£42.90 per 1000) \/ Brown \/ 114 x 162 mm (4.5” x 6.4”)","offer_id":56666973012354,"sku":"BdBkEnv-Brn-114x162(A6)_4000","price":171.6,"currency_code":"GBP","in_stock":true},{"title":"8000 @ £325.90 (£40.74 per 1000) \/ Brown \/ 114 x 162 mm (4.5” x 6.4”)","offer_id":56666973045122,"sku":"BdBkEnv-Brn-114x162(A6)_8000","price":325.9,"currency_code":"GBP","in_stock":true},{"title":"16000 @ £619.40 (£38.71 per 1000) \/ Brown \/ 114 x 162 mm (4.5” x 6.4”)","offer_id":56667189870978,"sku":"BdBkEnv-Brn-114x162(A6)_16000","price":619.4,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/6125\/0735\/files\/A6_notext.png?v=1780398970"},{"product_id":"162-x-229-mm-board-back-envelope-a5-c5","title":"162 x 229mm Board Back Envelope (A5 \/ C5)","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThese peel and seal board back envelopes are designed to protect A5-sized and smaller contents from bending, creasing and damage during posting. Suitable for mailing photos, small prints, important documents. Each envelope features a clear red “Please Do Not Bend” caption to alert handlers to take extra care during delivery.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e📐A6 Size: 162 x 229 mm (6.4” x 9”)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e✨Board back design helps keep contents flat and protected in transit\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e🔒 Peel and seal closure for fast, secure and hassle-free packing\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e❗\u003c\/span\u003e\u003cspan\u003eRed “Please Do Not Bend” warning clearly alerts handlers to take extra care\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e♻️ \u003c\/span\u003e\u003cspan\u003eRecyclable material for a more environmental friendly packaging choice\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystal Mailing","offers":[{"title":"10 @ £3.20 (£320.00 per 1000) \/ Brown \/ 162 x 229 mm (6.4” x 9”)","offer_id":56670973526402,"sku":"BdBkEnv-Brn-162x229(A5)_10","price":3.2,"currency_code":"GBP","in_stock":true},{"title":"25 @ £3.80 (£152.00 per 1000) \/ Brown \/ 162 x 229 mm (6.4” x 9”)","offer_id":56670973559170,"sku":"BdBkEnv-Brn-162x229(A5)_25","price":3.8,"currency_code":"GBP","in_stock":true},{"title":"50 @ £5.50 (£110.00 per 1000) \/ Brown \/ 162 x 229 mm (6.4” x 9”)","offer_id":56670973591938,"sku":"BdBkEnv-Brn-162x229(A5)_50","price":5.5,"currency_code":"GBP","in_stock":true},{"title":"125 @ £10.30 (£82.40 per 1000) \/ Brown \/ 162 x 229 mm (6.4” x 9”)","offer_id":56670973624706,"sku":"BdBkEnv-Brn-162x229(A5)_125","price":10.3,"currency_code":"GBP","in_stock":true},{"title":"250 @ £16.30 (£65.20 per 1000) \/ Brown \/ 162 x 229 mm (6.4” x 9”)","offer_id":56670973657474,"sku":"BdBkEnv-Brn-162x229(A5)_250","price":16.3,"currency_code":"GBP","in_stock":true},{"title":"500 @ £27.70 (£55.40 per 1000) \/ Brown \/ 162 x 229 mm (6.4” x 9”)","offer_id":56670973690242,"sku":"BdBkEnv-Brn-162x229(A5)_500","price":27.7,"currency_code":"GBP","in_stock":true},{"title":"1000 @ £52.20 (£52.20 per 1000) \/ Brown \/ 162 x 229 mm (6.4” x 9”)","offer_id":56670973723010,"sku":"BdBkEnv-Brn-162x229(A5)_1000","price":52.2,"currency_code":"GBP","in_stock":true},{"title":"2000 @ £102.10 (£51.05 per 1000) \/ Brown \/ 162 x 229 mm (6.4” x 9”)","offer_id":56670973755778,"sku":"BdBkEnv-Brn-162x229(A5)_2000","price":102.1,"currency_code":"GBP","in_stock":true},{"title":"4000 @ £200.10 (£50.03 per 1000) \/ Brown \/ 162 x 229 mm (6.4” x 9”)","offer_id":56670973788546,"sku":"BdBkEnv-Brn-162x229(A5)_4000","price":200.1,"currency_code":"GBP","in_stock":true},{"title":"8000 @ £392.20 (£49.03 per 1000) \/ Brown \/ 162 x 229 mm (6.4” x 9”)","offer_id":56670973821314,"sku":"BdBkEnv-Brn-162x229(A5)_8000","price":392.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/6125\/0735\/files\/A5_notext.png?v=1780398932"},{"product_id":"457-x-324-mm-board-back-envelope-a3-c3","title":"457 x 324mm Board Back Envelope (A3 \/ C3)","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThese peel and seal board back envelopes are designed to protect A3-sized and smaller contents from bending, creasing and damage during posting. Suitable for mailing posters, prints and important documents. Each envelope features a clear red “Please Do Not Bend” caption to alert handlers to take extra care during delivery.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e📐A3 Size: 457 x 324 mm (18.0” x 12.8”)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e✨Board back design helps keep contents flat and protected in transit\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e🔒 Peel and seal closure for fast, secure and hassle-free packing\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e❗\u003c\/span\u003e\u003cspan\u003eRed “Please Do Not Bend” warning clearly alerts handlers to take extra care\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e♻️ \u003c\/span\u003e\u003cspan\u003eRecyclable material for a more environmental-friendly packaging choice\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystal Mailing","offers":[{"title":"10 @ £4.70 (£470.00 per 1000) \/ Brown \/ 457 x 324 mm (18.0\" x 12.8”)","offer_id":56676950344066,"sku":"BdBkEnv-Brn-324x457(A3)_10","price":4.7,"currency_code":"GBP","in_stock":true},{"title":"25 @ £7.70 (£308.00 per 1000) \/ Brown \/ 457 x 324 mm (18.0\" x 12.8”)","offer_id":56676950376834,"sku":"BdBkEnv-Brn-324x457(A3)_25","price":7.7,"currency_code":"GBP","in_stock":true},{"title":"50 @ £11.90 (£238.00 per 1000) \/ Brown \/ 457 x 324 mm (18.0\" x 12.8”)","offer_id":56676950409602,"sku":"BdBkEnv-Brn-324x457(A3)_50","price":11.9,"currency_code":"GBP","in_stock":true},{"title":"100 @ £23.00 (£230.00 per 1000) \/ Brown \/ 457 x 324 mm (18.0\" x 12.8”)","offer_id":56676950442370,"sku":"BdBkEnv-Brn-324x457(A3)_100","price":23.0,"currency_code":"GBP","in_stock":true},{"title":"200 @ £45.10 (£225.50 per 1000) \/ Brown \/ 457 x 324 mm (18.0\" x 12.8”)","offer_id":56676950475138,"sku":"BdBkEnv-Brn-324x457(A3)_200","price":45.1,"currency_code":"GBP","in_stock":true},{"title":"250 @ £49.10 (£196.40 per 1000) \/ Brown \/ 457 x 324 mm (18.0\" x 12.8”)","offer_id":56676950507906,"sku":"BdBkEnv-Brn-324x457(A3)_250","price":49.1,"currency_code":"GBP","in_stock":true},{"title":"500 @ £95.00 (£190.00 per 1000) \/ Brown \/ 457 x 324 mm (18.0\" x 12.8”)","offer_id":56676950540674,"sku":"BdBkEnv-Brn-324x457(A3)_500","price":95.0,"currency_code":"GBP","in_stock":true},{"title":"1000 @ £189.20 (£189.20 per 1000) \/ Brown \/ 457 x 324 mm (18.0\" x 12.8”)","offer_id":56676950573442,"sku":"BdBkEnv-Brn-324x457(A3)_1000","price":189.2,"currency_code":"GBP","in_stock":true},{"title":"2000 @ £376.80 (£188.40 per 1000) \/ Brown \/ 457 x 324 mm (18.0\" x 12.8”)","offer_id":56676950606210,"sku":"BdBkEnv-Brn-324x457(A3)_2000","price":376.8,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/6125\/0735\/files\/BoardbackedenvA3_Page9.png?v=1779984285"},{"product_id":"324-x-229-mm-board-back-envelope-a4-c4","title":"324 x 229mm Board Back Envelope (A4 \/ C4)","description":"\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThese peel and seal board back envelopes are designed to protect A4-sized and smaller contents from bending, creasing and damage during posting. Suitable for mailing posters, prints and important documents. Each envelope features a clear red “Please Do Not Bend” caption to alert handlers to take extra care during delivery.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e📐A4 Size: 324 x 229 mm (12.8” x 9.0”)\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e✨Board back design helps keep contents flat and protected in transit\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e🔒 Peel and seal closure for fast, secure and hassle-free packing\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e❗\u003c\/span\u003e\u003cspan\u003eRed “Please Do Not Bend” warning clearly alerts handlers to take extra care\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003e♻️ \u003c\/span\u003e\u003cspan\u003eRecyclable material for a more environmental-friendly packaging choice\u003c\/span\u003e\u003c\/p\u003e","brand":"Crystal Mailing","offers":[{"title":"10 @ £3.60 (£360.00 per 1000) \/ Brown \/ 324 x 229 mm (12.8” x 9.0”)","offer_id":56676975214978,"sku":"BdBkEnv-Brn-229x324(A4)_10","price":3.6,"currency_code":"GBP","in_stock":true},{"title":"25 @ £6.20 (£248.00 per 1000) \/ Brown \/ 324 x 229 mm (12.8” x 9.0”)","offer_id":56676975247746,"sku":"BdBkEnv-Brn-229x324(A4)_25","price":6.2,"currency_code":"GBP","in_stock":true},{"title":"50 @ £7.90 (£158.00 per 1000) \/ Brown \/ 324 x 229 mm (12.8” x 9.0”)","offer_id":56676975280514,"sku":"BdBkEnv-Brn-229x324(A4)_50","price":7.9,"currency_code":"GBP","in_stock":true},{"title":"125 @ £14.10 (£112.80 per 1000) \/ Brown \/ 324 x 229 mm (12.8” x 9.0”)","offer_id":56676975313282,"sku":"BdBkEnv-Brn-229x324(A4)_125","price":14.1,"currency_code":"GBP","in_stock":true},{"title":"250 @ £24.50 (£98.00 per 1000) \/ Brown \/ 324 x 229 mm (12.8” x 9.0”)","offer_id":56676975346050,"sku":"BdBkEnv-Brn-229x324(A4)_250","price":24.5,"currency_code":"GBP","in_stock":true},{"title":"500 @ £45.90 (£91.80 per 1000) \/ Brown \/ 324 x 229 mm (12.8” x 9.0”)","offer_id":56676975378818,"sku":"BdBkEnv-Brn-229x324(A4)_500","price":45.9,"currency_code":"GBP","in_stock":true},{"title":"1000 @ £91.00 (£91.00 per 1000) \/ Brown \/ 324 x 229 mm (12.8” x 9.0”)","offer_id":56676975411586,"sku":"BdBkEnv-Brn-229x324(A4)_1000","price":91.0,"currency_code":"GBP","in_stock":true},{"title":"2000 @ £180.50 (£90.25 per 1000) \/ Brown \/ 324 x 229 mm (12.8” x 9.0”)","offer_id":56676975444354,"sku":"BdBkEnv-Brn-229x324(A4)_2000","price":180.5,"currency_code":"GBP","in_stock":true},{"title":"4000 @ £350.20 (£87.55 per 1000) \/ Brown \/ 324 x 229 mm (12.8” x 9.0”)","offer_id":56676975477122,"sku":"BdBkEnv-Brn-229x324(A4)_4000","price":350.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/6125\/0735\/files\/A4_notext.png?v=1780399013"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0612\/6125\/0735\/collections\/Boardbacked_env_Page_7.png?v=1779983839","url":"https:\/\/www.crystalmailing.co.uk\/collections\/boardbacked-envelopes.oembed","provider":"Crystal Mailing","version":"1.0","type":"link"}