{"product_id":"9-5x12-5-kraft-gummed-envelopes-28lb-secure-seal-case-of-500","title":"9.5x12.5\" Kraft Gummed Envelopes 28lb - Secure Seal, Case of 500","description":"\u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003e9.5x12.5\" kraft gummed paper envelopes in 28 lb stock, sold in a case of 500. Traditional water-activated gummed flap - moisten and press to seal. The most economical office envelope at scale, with the longest shelf life of any closure type (no adhesive that dries out, no peel strip to age). Best for archival mailings, low-volume offices, and any operation that already runs an envelope moistener.\u003c\/p\u003e\n\u003ch3\u003eSpecs at a glance\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct type\u003c\/th\u003e\n\u003ctd\u003eGummed paper envelope\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutside dimensions (W x L)\u003c\/th\u003e\n\u003ctd\u003e9.5 x 12.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePaper weight\u003c\/th\u003e\n\u003ctd\u003e28 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eClosure\u003c\/th\u003e\n\u003ctd\u003eWater-activated gummed flap\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eKraft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eEnvelopes per case\u003c\/th\u003e\n\u003ctd\u003e500\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eBest for\u003c\/h3\u003e\n\u003cp\u003eBest for low-volume office mailings, archival document storage, and high-volume operations with an inline envelope moistener. Gummed envelopes have the longest shelf life of any closure style - store for years without losing seal performance - making them ideal for stockpiled mailings and emergency-prep document caches.\u003c\/p\u003e\n\u003ch3\u003eWhen to use this product\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eLow-volume office mail where speed of close is not critical.\u003c\/li\u003e\n\u003cli\u003eLong-term envelope inventory that must remain sealable for years.\u003c\/li\u003e\n\u003cli\u003eHigh-volume operations with an inline moistener or sponge sealer.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhen to choose something else\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFor high-volume manual sealing without a moistener, choose a self-seal or Redi-Seal envelope.\u003c\/li\u003e\n\u003cli\u003eFor automated insertion lines, Redi-Seal is more equipment-friendly.\u003c\/li\u003e\n\u003cli\u003eFor fragile contents needing cushioning, see \u003ca href=\"\/collections\/bubble-mailers\"\u003ebubble mailers\u003c\/a\u003e or padded mailers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eNeed help choosing the right mailer?\u003c\/h3\u003e\u003cp\u003eNot sure if a chipboard mailer, padded mailer, bubble mailer, or paper envelope fits your shipment? Read the \u003ca href=\"\/pages\/mailers-guide\"\u003eMailers Buying Guide\u003c\/a\u003e for a head-to-head comparison of mailer types, use the \u003ca href=\"\/pages\/mailer-vs-box-selector\"\u003eMailer vs Box Selector\u003c\/a\u003e to decide between a mailer and a corrugated box, or check the \u003ca href=\"\/pages\/bubble-mailer-size-guide\"\u003eBubble Mailer Size Guide\u003c\/a\u003e if you are sizing a bubble mailer to a specific product. For poly-vs-bubble decisions, see \u003ca href=\"\/pages\/bubble-vs-poly-mailers\"\u003eBubble vs Poly Mailers\u003c\/a\u003e; for color choice, see \u003ca href=\"\/pages\/clear-vs-colored-poly-mailers\"\u003eClear vs Colored Poly Mailers\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eWhy use gummed envelopes vs. self-seal?\u003c\/strong\u003e\u003cbr\u003eGummed wins on shelf life (years) and unit cost at scale. Self-seal wins on pack-out speed for manual sealing. If you stockpile envelopes or run a moistener, gummed is more economical; if you seal manually one at a time, self-seal is faster.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow long do gummed envelopes last in storage?\u003c\/strong\u003e\u003cbr\u003eYears - the dry adhesive does not degrade like pressure-sensitive strips. Keep them dry and they will activate when moistened indefinitely.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat does 28 lb paper weight mean?\u003c\/strong\u003e\u003cbr\u003ePaper weight is the weight of a 500-sheet ream of base 17x22\" paper. 28 lb is the standard office-envelope weight - durable and first-class-postage friendly.\u003c\/p\u003e\n\u003ch3\u003eRecommended add-ons and related links\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eBrowse the full \u003ca href=\"\/collections\/mailers-envelopes\"\u003eMailers \u0026amp; Envelopes collection\u003c\/a\u003e for adjacent sizes and mailer styles.\u003c\/li\u003e\n\u003cli\u003eFor shipments that need a rigid carton instead of a flat mailer, see the \u003ca href=\"\/collections\/mailer-boxes\"\u003emailer boxes collection\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Packrift","offers":[{"title":"Default Title","offer_id":53474218738032,"sku":"EN1035","price":126.42,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1004\/9159\/2048\/files\/EN1035.jpg?v=1774967750","url":"https:\/\/packrift.com\/products\/9-5x12-5-kraft-gummed-envelopes-28lb-secure-seal-case-of-500","provider":"Packrift","version":"1.0","type":"link"}