9 by 12 envelope

25ct Fall Pumpkins Envelope

UBMOVE Bulk Pack of 50 White Corrugated Mailer and Literature Boxes (12-1/9" x 9-3/4" x 4")

Manila Clasp Envelope, 6x9, 5 Pack (48 Packs)

supplyhut 100 - 12 1/8" x 9 1/8" x 2" White Multi Depth Bookfold Mailer Book Box Bookfolds

JAM PAPER #10 Business Colored Envelopes - 4 1/8 x 9 1/2 - Violet Purple Recycled - 100/Pack

JAM PAPER #10 Business Colored Envelopes - 4 1/8 x 9 1/2 - Yellow Recycled - 100/Pack

UOFFICE Pack of 25 Small Corrugated Cardboard Boxes 12" x 9" x 4"

Fosmon #6 Kraft Bubble Mailer 12 x 16 inches, Padded Shipping Envelopes for Book, Magazine, Documents

Universal Peel Seal Strip Security Tint Business Envelope, #10, Square Flap, Self-Adhesive Closure, 4.25 x 9.63, White, 500/Box

JAM PAPER #10 Business Colored Window Envelopes - 4 1/8 x 9 1/2 - Ultra Fuchsia Hot Pink - 100/Pack

Mead® Press-It Seal-It® Security Envelopes, #10, 45 Per Box, 12 Boxes