9 by 12 envelope

UOFFICE Pacl of 500 Poly Mailers Bags 12"x15.5" - #4 Envelopes with Self-Sealing Closure

UOFFICE Pacl of 250 Bubble Out Bags 10" x 15.5" Clear Envelopes

UOFFICE Colored Poly Mailer Bags 7.5" x 10.5" Envelopes

80ct Security Envelopes White - up&up™

JAM Paper Envelopes #10 50ct Parchment

UOFFICE Pack of 1,000 Clear Resealable Cellophane Bags, 3.9" x 7.1" with Hanging Header

UOFFICE Pack of 1,000 Clear Resealable Cellophane Bags, 2.8" x 3.9" with Hanging Header

UOFFICE Pack of 1,000 Clear Resealable Cellophane Bags 3.1" x 5.9" with Hanging Header

Juvale 100 Count Assorted Color Gift Card Envelopes, Small Envelope Gummed Seal, Mini Cash Envelopes for Business, Saving Money, 10 Colors, 4 x 2.7 In

Universal Peel Seal Strip Security Tint Business Envelope, #10, Square Flap, Self-Adhesive Closure, 4.13 x 9.5, White, 100/Box

Paper Junkie Kraft Paper Invitation Envelopes 4x6 for Special Occasions like Weddings A6 V-Flap Brown Envelopes (50 Pack)

Best Paper Greetings 100 Pack Colored 5x7 Mailing Envelopes, A7 Size Invitations, Greeting Cards, Peel and Stick Seal, Square Flap, 7 Colors

Paper Junkie 50 Pack Black Envelopes - Bulk Black 5.25x7.25 Envelopes for Invitations, Wedding, Graduation, (A7, Square Flap)

Best Paper Greetings 100 Pack Colored 4x6 Envelopes for Invitations, Birthday Cards, Wedding, Photos, Self-Adhesive Peel-Off-and-Stick, A6, 7 Colors

UOFFICE Pack of 50 Kraft Bubble Mailers 4" x 8" - #000 Self-Sealing Padded Envelopes

Stockroom Plus 500-Piece Round Metallic Gold 2-inch Mailing Labels Stickers Roll, Envelope Seals

UOFFICE Pack of 25 Kraft Bubble Mailers 4" x 8"- #000 Self-Sealing Padded Envelopes

Pipilo Press Gold Money Envelopes for Cash Gifts, Laser Cut Holders for Currency for Wedding, Birthday (6.8x3.3 In, 36 Pack)

Paper Junkie 48 Pack Bulk Sympathy & Get Well Cards Assortment Box with Envelopes - 12 Floral Designs, Blank On The Inside, 4x6 In

Juvale 96-Pack #10 Envelopes with Gummed Seal and V-Flap for Party Invitations, Mailing Business Letters, Invoices

Fosmon 24" x 24", Large Self-Seal Tear-Proof Polyethylene Mailers

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

Fosmon #0 Colored PINK Poly Bubble Mailer 6.5" x 10", Padded Shipping Envelopes, 6.5 x 9" Usable size - 10 Pack

Fosmon #0 Kraft Bubble Mailer 6.5" x 10", Extra Wide Padded Shipping Envelopes

Best Paper Greetings 48-Pack Parchment Envelopes for Letters with Gummed Seal - Decorative Vintage Style Home Stationary Supplies

Link Size #000 4"x8" Poly Bubble Mailer Self-Sealing Waterproof Shipping Envelopes Pack Of 10/25/50/100/500

Fosmon 30" x 36", Large Self-Seal Tear-Proof Polyethylene Mailers

Link #0 6" X 10" Kraft Paper Bubble Mailers Padded Self Seal Shipping Envelopes Pack of 10/25/50/100/250

Link Size #4 9.5"x14.5" Poly Bubble Mailer Self-Sealing Waterproof Shipping Envelopes Pack Of 10/25/50/100

Quality Park #10 Security Envelopes, No Window, Redi-Strip Self Seal Envelopes, 24-lb White Wove, 4-1/8" x 9-1/2"

Juvale 25-Pack Stay Flat Rigid Mailers 9x11.5 with Self Adhesive Seal, 450 GSM Sturdy Brown Cardboard Envelopes

Unique Bargains Thick Paper Greeting Card A7 Envelopes with Gold Border 5" x 7" 200 Pcs

Scotch Poly Bubble Mailer White

Press and Seal Security Envelopes 4" x 9.5" White - up&up™

Scotch 10.5"x14.7"Curbside Recyclable Mailer Size 5: Self-Adhesive Padded Shipping Envelopes, Tan

5ct 6" x 9" Clasp Closure Manila Envelopes - up&up™: Small Beige Mailing Stationery, Paper, 5 Pack

55ct Press and Seal Security Envelopes 3.5" x 6.5" White - up&up™: Self-Seal Mailing, Business, Letter

80ct Security Envelopes White - up&up™

Scotch 5.5"x9"Curbside Recyclable Mailer Size 0 Brown: Self-Adhesive Padded Shipping Envelopes, Single Pack

20ct 9" x 12" Clasp Closure Manila Envelopes - up&up™: Beige Paper, Mailing Packaging, Stationery, Office Supplies

Scotch 9"x10.5" Curbside Recyclable Mailer Size 2: Padded Shipping Envelope, Self-Adhesive, Tan

4ct 9" x 12" Clasp Closure Manila Envelopes - up&up™: Large Mailing Envelopes, Beige, Paper, Stationery, 4 Pack

Scotch 12.5"x17.5" Curbside Recyclable Mailer Size 6: Self-Adhesive Padded Envelopes, 100% Recycled Paper, Tan

125ct 4" x 9.5" Security Envelopes White - up&up™: Business Mailing, Letter, Legal, Gummed Flap, Paper, 125 Pack

3ct 10"x13" Clasp Closure Manila Envelopes - up&up™: Beige Paper Mailing Envelopes, Stationery, Office Supplies

Scotch 3pk Gusseted Mailer White: Self-Adhesive Polyethylene Shipping Envelopes, 11" x 8.5" Padded Mailers

Scotch Poly Bubble Padded Mailer 3pk Small Green

Scotch Curbside Recyclable Mailer Size 4 Brown: Self-Adhesive Shipping Envelopes, 13.5" x 9.5", Paper Material

Scotch 6pk Flex Poly Bags Expandable Soft Mailer Gray: Self-Adhesive Shipping & Mailing Envelopes, 13"x10"

Scotch Poly Bubble Padded Mailer 3pk Small Red

Scotch Poly Bubble Padded Mailer 3pk Large Taupe

UOFFICE Pack of 50 Poly Mailers Bags 14.5"x19" - #6 Envelopes wirh Self-Sealing Closure

40ct Kraft Envelope: Great Papers! Brown Mailing Envelopes, 9.5" x 4.125", Gummed Flap, 40 Pack

Scotch Poly Bubble Padded Mailer 3pk Large Blue

Scotch Poly Yellow Bubble Mailer Size 5

30ct 6" x 9" Press and Seal Envelopes White - up&up™: Self-Seal Mailing, Paper, Gummed Flap, Size 9, 30 Pack