{"title":"Rigid Board Mailers","description":"","products":[{"product_id":"manila-brown-400gsm-peel-seal-rigid-board-mailers-envelope-510-x-350mm","title":"Manila Brown 400gsm Peel \u0026 Seal Rigid Board Mailers Envelope (510 x 350mm)","description":"\u003cp\u003eProtect your shipments with our 510 x 350mm manila corrugated mailers, crafted from 400gsm rigid board for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these square mailers are perfect for books, small electronics, and retail items. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.\u003c\/p\u003e","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735807086941,"sku":"ZEP01008","price":129.46,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/CBM278400M_01.jpg?v=1764246138"},{"product_id":"manila-brown-400gsm-peel-seal-rigid-board-mailers-envelope-345-x-250-mm","title":"Manila Brown 400gsm Peel \u0026 Seal Rigid Board Mailers Envelope (345 x 250mm)","description":"\u003cp\u003eProtect your shipments with our 345 x 250mm manila corrugated mailers, crafted from 400gsm rigid board for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these square mailers are perfect for books, small electronics, and retail items. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.\u003c\/p\u003e","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735807185245,"sku":"ZEP01004","price":0.19,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/CBM278400M_01_96b27e39-d3a6-4ff4-959b-2e858021641f.jpg?v=1764246140"},{"product_id":"manila-brown-280gsm-peel-seal-rigid-board-mailers-envelope-210-x-285mm","title":"Manila Brown 280gsm Peel \u0026 Seal Rigid Board Mailers Envelope (210 x 285mm)","description":"\u003cp\u003eProtect your shipments with our 210 x 285mm manila corrugated mailers, crafted from 400gsm rigid board for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these square mailers are perfect for books, small electronics, and retail items. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.\u003c\/p\u003e","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735807218013,"sku":"ZCBM210285M-280","price":0.12,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/CBM278400M_01_c857170e-a60f-4468-9433-0026859b39cb.jpg?v=1764246141"},{"product_id":"manila-brown-400gsm-peel-seal-rigid-board-mailers-envelope-278-x-400mm","title":"Manila Brown 400gsm Peel \u0026 Seal Rigid Board Mailers Envelope (278 x 400mm)","description":"\u003cp\u003eProtect your shipments with our 278 x 400mm manila corrugated mailers, crafted from 400gsm rigid board for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these square mailers are perfect for books, small electronics, and retail items. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.\u003c\/p\u003e","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735807250781,"sku":"CBM278400M","price":0.59,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/CBM278400M_01_27cfb434-c94d-45b8-adb8-b1d2b336e681.jpg?v=1764246143"},{"product_id":"manila-brown-400gsm-peel-seal-rigid-board-mailers-envelope-248-x-345mm","title":"Manila Brown 400gsm Peel \u0026 Seal Rigid Board Mailers Envelope (248 x 345mm)","description":"\u003cp\u003eProtect your shipments with our 248 x 345mm manila corrugated mailers, crafted from 400gsm rigid board for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these square mailers are perfect for books, small electronics, and retail items. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.\u003c\/p\u003e","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735807283549,"sku":"CFM248345M","price":0.63,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/CFM248345M_01.png?v=1764246144"},{"product_id":"150x150-mm-capacity-book-mailer","title":"Manila Brown 300gsm Peel \u0026 Seal Rigid Board Mailers Envelope (150 x 150mm)","description":"Protect your shipments with our 150x150 mm manila rigid board mailers, crafted from 300gsm card for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these square mailers are perfect for books, small electronics, and retail items. Available in 280gsm and 400gsm options. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735840805213,"sku":"CBM150150M-300","price":0.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/manila-brown-300gsm-peel-seal-rigid-board-mailers-envelope-150-x-150mm-cbm150150m-300-envelopescouk-2395601.jpg?v=1764246274"},{"product_id":"164x180-mm-capacity-book-mailer","title":"Manila Brown Envelope (164 x 180mm)","description":"Protect your shipments with our 164x180 mm manila rigid board mailers, crafted from 400gsm card for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these heavyweight mailers are perfect for books, electronics, and premium items. Available in 280gsm and 300gsm options. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735840903517,"sku":"CBM164180M","price":0.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/CBM164180M_01.jpg?v=1764246275"},{"product_id":"164-x-180-capacity-book-mailer-wallet-300gsm","title":"Manila Brown 270gsm Peel \u0026 Seal Rigid Board Mailers Envelope (164 x 180mm)","description":"Protect your shipments with our 164x180 mm manila rigid board mailers, crafted from 270gsm card for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these mailers are perfect for books, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/document-enclosed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edocuments\u003c\/a\u003e, and retail items. Available in 280gsm and 400gsm options. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735840969053,"sku":"CBM164180M-300","price":0.18,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/CBM164180M-300_01.jpg?v=1764246276"},{"product_id":"180x235-mm-capacity-book-mailer","title":"Manila Brown Envelope (180 x 235mm)","description":"Protect your shipments with our 180x235 mm manila rigid board mailers, crafted from 400gsm card for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these heavyweight mailers are perfect for books, electronics, and premium items. Available in 280gsm and 300gsm options. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735841034589,"sku":"CBM180235M","price":0.28,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/CBM180235M_01.jpg?v=1764246277"},{"product_id":"180-x-235-capacity-book-mailer-300gsm","title":"Manila Brown 270gsm Peel \u0026 Seal Rigid Board Mailers Envelope (180 x 235mm)","description":"Protect your shipments with our 180x235 mm manila rigid board mailers, crafted from 270gsm card for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these mailers are perfect for books, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/document-enclosed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edocuments\u003c\/a\u003e, and retail items. Available in 280gsm and 400gsm options. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735841100125,"sku":"CBM180235M-300","price":0.22,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/CBM180235M-300_01.jpg?v=1764246278"},{"product_id":"194x292mm-capacity-book-mailer-400-gsm-envelopes","title":"Manila Brown Envelope (194 x 292mm)","description":"Protect your shipments with our 194x292 mm manila rigid board mailers, crafted from 400gsm card for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these heavyweight mailers are perfect for books, electronics, and premium items. Available in 280gsm and 300gsm options. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735841165661,"sku":"CBM194292M","price":0.31,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/CBM194292M_01.jpg?v=1764246279"},{"product_id":"194-x-292-capacity-book-mailers-wallet-300gsm","title":"Manila Brown 270gsm Peel \u0026 Seal Rigid Board Mailers Envelope (194 x 292mm)","description":"Protect your shipments with our 194x292 mm manila rigid board mailers, crafted from 270gsm card for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these mailers are perfect for books, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/document-enclosed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edocuments\u003c\/a\u003e, and retail items. Available in 280gsm and 400gsm options. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735841231197,"sku":"CBM194292M-300","price":0.27,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/CBM194292M-300_01.jpg?v=1764246281"},{"product_id":"234x334-mm-capacity-book-mailer","title":"Manila Brown Envelope (234 x 334mm)","description":"Protect your shipments with our 234x334 mm manila rigid board mailers, crafted from 400gsm card for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these heavyweight mailers are perfect for books, electronics, and premium items. Available in 280gsm and 300gsm options. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735841329501,"sku":"CBM234334M","price":0.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/CBM234334M_01.jpg?v=1764246282"},{"product_id":"234-x-334-capacity-book-mailer-300gsm","title":"Manila Brown 270gsm Peel \u0026 Seal Rigid Board Mailers Envelope (234 x 334mm)","description":"Protect your shipments with our 234x334 mm manila rigid board mailers, crafted from 270gsm card for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these mailers are perfect for books, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/document-enclosed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edocuments\u003c\/a\u003e, and retail items. Available in 280gsm and 400gsm options. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735841395037,"sku":"CBM234334M-300","price":0.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/CBM234334M-300_01.jpg?v=1764246283"},{"product_id":"328x458-mm-capacity-book-mailer","title":"Manila Brown 400gsm Peel \u0026 Seal Rigid Board Mailers Envelope (328 x 458mm)","description":"Protect your shipments with our 328x458 mm manila rigid board mailers, crafted from 400gsm card for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these heavyweight mailers are perfect for books, electronics, and premium items. Available in 280gsm and 300gsm options. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735841460573,"sku":"CBM328458M","price":0.72,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/CBM328458M_01.jpg?v=1764246284"},{"product_id":"180x180-mm-capacity-book-mailer-f-flute","title":"Manila Brown 300gsm Peel \u0026 Seal Rigid Board Mailers Envelope (180 x 180mm)","description":"Protect your shipments with our 180x180 mm manila corrugated mailers, crafted from 400gsm rigid board for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these square mailers are perfect for books, small electronics, and retail items. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735848964445,"sku":"CFM180180M","price":0.23,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/manila-brown-300gsm-peel-seal-rigid-board-mailers-envelope-180-x-180mm-cfm180180m-envelopescouk-1486512.jpg?v=1764246328"},{"product_id":"180x235-mm-capacity-book-mailer-f-flute","title":"Manila Brown 300gsm Peel \u0026 Seal Rigid Board Mailers Envelope (180 x 235mm)","description":"Protect your shipments with our 180x235 mm manila corrugated mailers, crafted from 400gsm rigid board for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these heavyweight mailers are perfect for books, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/document-enclosed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003edocuments\u003c\/a\u003e, and retail items. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735849161053,"sku":"CFM180235M","price":0.27,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/manila-brown-300gsm-peel-seal-rigid-board-mailers-envelope-180-x-235mm-cfm180235m-envelopescouk-6252717.jpg?v=1764246330"},{"product_id":"194x292-mm-capacity-book-mailer-f-flute","title":"Manila Brown 300gsm Peel \u0026 Seal Rigid Board Mailers Envelope (194 x 292mm)","description":"Protect your shipments with our 194x292 mm manila corrugated mailers, crafted from 400gsm rigid board for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these heavyweight mailers are perfect for books, electronics, and premium items. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735849259357,"sku":"CFM194292M","price":0.35,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/manila-brown-300gsm-peel-seal-rigid-board-mailers-envelope-194-x-292mm-cfm194292m-envelopescouk-5409065.jpg?v=1764246332"},{"product_id":"234x334-mm-capacity-book-mailer-f-flute","title":"Manila Brown 300gsm Peel \u0026 Seal Rigid Board Mailers Envelope (234 x 334mm)","description":"Protect your shipments with our 234x334 mm manila corrugated mailers, crafted from 400gsm rigid board for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these heavyweight mailers are perfect for books, electronics, and premium items. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735849324893,"sku":"CFM234334M","price":0.44,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/manila-brown-300gsm-peel-seal-rigid-board-mailers-envelope-234-x-334mm-cfm234334m-envelopescouk-7648217.jpg?v=1764246334"},{"product_id":"321x467-mm-capacity-book-mailer-f-flute","title":"Manila Brown 300gsm Peel \u0026 Seal Rigid Board Mailers Envelope (321 x 467mm)","description":"Protect your shipments with our 321x467 mm manila corrugated mailers, crafted from 400gsm rigid board for a durable, \u003ca href=\"https:\/\/www.envelopes.co.uk\/collections\/eco-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eeco-friendly\u003c\/a\u003e solution. Featuring a peel and seal flap and red rip strip for easy opening, these heavyweight mailers are perfect for books, electronics, and premium items. Contact our team for \u003ca href=\"https:\/\/www.envelopes.co.uk\/pages\/printed-envelopes\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eCustom Printing\u003c\/a\u003e options for these rigid board mailers.","brand":"envelopes.co.uk","offers":[{"title":"Default Title","offer_id":62735849390429,"sku":"CFM321467M","price":0.83,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/5371\/5293\/files\/manila-brown-300gsm-peel-seal-rigid-board-mailers-envelope-321-x-467mm-cfm321467m-envelopescouk-6796828.jpg?v=1764246334"}],"url":"https:\/\/www.brokerpac.com\/collections\/envelopes.oembed","provider":"Brokerpac","version":"1.0","type":"link"}