{"product_id":"4-5x6-red-invoice-enclosed-poly-envelopes-2-mil-case-of-1000","title":"4.5x6\" Red Invoice Enclosed Poly Envelopes - 2 Mil, Case of 1000","description":"\u003cp\u003eIndustrial buyers trust these adhesive-backed red invoice enclosed envelopes to protect packing lists and shipping documents throughout the fulfillment process. The pre-printed \"Invoice Enclosed\" message eliminates manual labeling and reduces handling errors, saving time across your warehouse. Constructed from 2 mil poly for durability during transit, each 4.5\" x 6\" envelope is sized to fit standard packing lists and invoices. Packrift's case of 1000 provides month-long supply at the lowest cost per unit, with fast shipping to keep your operations moving. Whether you're managing e-commerce returns, B2B shipments, or complex logistics, these envelopes meet standard shipping and compliance requirements.\u003c\/p\u003e\n\n\u003c!-- packrift-enriched --\u003e\n\u003cdiv class=\"packrift-enrichment\"\u003e\n\u003csection class=\"pf-best-for\"\u003e\u003ch3\u003eBest For\u003c\/h3\u003e\n\u003cp\u003eIdeal for e-commerce businesses, logistics companies, and distributors who need to securely attach invoices and packing lists to shipments. These 4 1\/2\" x 6\" red poly envelopes keep documents protected and visible during transit while meeting shipping compliance requirements for document inclusion.\u003c\/p\u003e\n\u003cp\u003eMade from durable 2 mil polyethylene with adhesive backing, these envelopes resist moisture and tearing during handling and transport. The pre-printed \"Invoice Enclosed\" labeling ensures carrier compliance and reduces processing errors, while the bright red color provides instant visibility on packages.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"pf-specs\"\u003e\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003e2 Mil Polyethylene (Poly)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e4 1\/2\" x 6\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eColor\u003c\/th\u003e\n\u003ctd\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eQuantity per Case\u003c\/th\u003e\n\u003ctd\u003e1,000 Envelopes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecyclable\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/section\u003e\u003csection class=\"pf-use-cases\"\u003e\u003ch3\u003eCommon Use Cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAttaching invoices to outbound shipments\u003c\/li\u003e\n\u003cli\u003eSecuring packing lists on parcels\u003c\/li\u003e\n\u003cli\u003eProtecting documentation during multi-leg shipping\u003c\/li\u003e\n\u003cli\u003eCompliance with carrier requirements for document visibility\u003c\/li\u003e\n\u003cli\u003eReducing lost or damaged paperwork in fulfillment centers\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"pf-included\"\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1,000 pre-printed \"Invoice Enclosed\" envelopes (4 1\/2\" x 6\")\u003c\/li\u003e\n\u003cli\u003eAdhesive backing for secure package attachment\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"pf-shipping\"\u003e\u003ch3\u003eShipping and Packaging\u003c\/h3\u003e\n\u003cp\u003eShipped in a single case of 1,000 units. Bulk packaging minimizes dimensional weight charges and reduces per-unit shipping costs for high-volume buyers.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"pf-faq\"\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdetails\u003e\u003csummary\u003eAre these envelopes water-resistant?\u003c\/summary\u003e\u003cp\u003eYes. The 2 mil polyethylene material provides moisture protection to keep invoices and packing lists dry during weather exposure or handling in humid environments.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan these envelopes be used with thermal printers or label makers?\u003c\/summary\u003e\u003cp\u003eThese envelopes come pre-printed with \"Invoice Enclosed\" text. If you need custom printing, we recommend our blank envelope options. The adhesive backing makes them compatible with standard package application methods.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhat is the difference between 2 mil and thicker poly materials?\u003c\/summary\u003e\u003cp\u003e2 mil poly provides cost-effective protection for standard shipping conditions while remaining flexible and easy to apply. Thicker materials offer additional durability for high-handling or harsh environments, but increase per-unit costs.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eHow many cases should I order for monthly shipping volumes?\u003c\/summary\u003e\u003cp\u003eWith 1,000 envelopes per case, calculate your monthly invoice volume and order accordingly. Case pricing provides significant per-unit savings compared to smaller quantities, making bulk ordering more cost-efficient for regular shipping operations.\u003c\/p\u003e\u003c\/details\u003e\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c!-- \/packrift-enriched --\u003e\n\n\u003c!-- packrift-pdp-link-enrichment:v1:start --\u003e\n\u003cp class=\"packrift-pdp-links\" style=\"margin-top:1.25em;font-size:0.95em;color:#222\"\u003e\u003cstrong\u003eRelated guides \u0026amp; tools:\u003c\/strong\u003e \u003ca href=\"https:\/\/packrift.com\/pages\/mailers-guide\"\u003eMailers Guide\u003c\/a\u003e\u003c\/p\u003e\n\u003c!-- packrift-pdp-link-enrichment:v1:end --\u003e\n","brand":"Packrift","offers":[{"title":"Default Title","offer_id":53431022158192,"sku":"PL420","price":38.46,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1004\/9159\/2048\/files\/PL420.jpg?v=1774837385","url":"https:\/\/packrift.com\/products\/4-5x6-red-invoice-enclosed-poly-envelopes-2-mil-case-of-1000","provider":"Packrift","version":"1.0","type":"link"}