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The 6 x 9 booklet envelope opens on the long (9-inch) edge, giving you a wide side opening that handles half-folded letter sheets, 5 x 7 photos, small booklets, and flat printed inserts without forcing the contents in. This version is 28 lb brown kraft, 105 gsm, which is heavier than the 24 lb white wove alternative and provides more structural rigidity under a full content load at this size. At 6 inches tall, this envelope sits right at the USPS letter-rate height threshold: light contents under 3.5 oz mail at First-Class letter postage rather than the higher flat-mail rate that applies automatically to the 9 x 12 format. For direct mail programs, marketing packet mailings, and any recurring program where postage cost per piece matters, that rate difference per unit compounds significantly across a full run. Available blank or with custom logo and return address printing from Business Envelopes. Free shipping, no minimums.
Both the brown kraft and white wove versions of the 6 x 9 booklet are available in this catalog. The weight difference matters at this size in a way that's easy to feel in the hand and see on arrival. A 24 lb white envelope with a half-folded letter sheet and a small insert inside deflects slightly under the internal weight. The face bows, the seam seals under pressure, and the piece arrives looking like it was packed a little too full. A 28 lb brown kraft envelope at the same content load holds its shape. The kraft fiber construction has higher rigidity per pound than white sulphite wove, which means the envelope maintains a flat face through postal sorting and delivery even when the contents are at the top of its comfortable capacity.
Brown kraft also suits the functional aesthetic better than white wove for certain mailing programs. For a direct mail piece going to a business audience, a brown kraft envelope signals a working document rather than a marketing piece, which can improve open rates. For interoffice routing, archival filing, and any context where the envelope is going to be handled repeatedly rather than opened once and discarded, the durability of 28 lb kraft over 24 lb white stock is the more relevant specification.
Some buyers search this size as "9 x 6 envelopes" (width first) and others as "6 x 9 envelopes" (height first). Same envelope either way: 6 inches tall, 9 inches wide. The booklet format opens on the 9-inch edge regardless of which dimension you search first. If you're sourcing for a mailing program and need to confirm the right size, the interior clearance is approximately 5.75 x 8.75 inches, which holds a standard half-folded letter sheet flat with room to spare on each side.
For the same 6 x 9 booklet format in white wove stock, see the 6 x 9 White Booklet Gum Flap. For the 6 x 9 brown open-end format that loads from the short (6-inch) edge instead, see the 6 x 9 Brown Open End Gum Flap. For the 6 x 9 with a metal clasp and gum seal dual closure for added security, see the 6 x 9 Brown Catalog Envelope with Metal Clasp. Browse the full 6 x 9 envelope range for all formats and closures at this size. Ships same or next business day on blank stock.
As always, our order was delivered quickly and printed perfectly! Thank you for the wonderful customer service!