Office Product: Quality Park 37910 Quality Park Clasp envelopes, 12x15-1/2, 28lb, Brown Kraft, 100/Box - Quality Park

Office Product: 100 12x15.5 WHITE POLY MAILERS ENVELOPES BAGS 12 x 15.5 - ValueMailers

Office Product: Quality Park Park Clasp Envelopes, 12 x 15.5 Inches, Brown Kraft, Box of 100 (37810) - Quality Park

Office Product: Quality Park Extra-Rigid Fiberboard Photo/Document Mailers, 12.75 x 15 Inches, Box of 25 (64019) - 0

Office Product: Perfectmaze 100 Piece Premium #5 White Poly Mailers Envelopes Bags 12 X 15.5 (PM-5) - Perfect Maze

Office Product: 10 EcoSwift 12 x 15.5 White Poly Mailers Self Sealing Bulk Packaging Materials Shipping Supplies Envelopes Bags 12 inches by 15.5 inches - EcoSwift

Office Product: Progo 100 ct 12x15.5 Self-seal Poly Mailers. Tear-proof, Water-resistant and Postage-saving Lightweight Plastic Shipping Envelopes / Bags. - Progo

Office Product: Quality Park R1790 Quality Open End Tyvek Envelopes, 12x15-1/2, White, 100/Box - 0

Office Product: Quality Park Redi-Strip Catalog Envelopes, 12 x 15.5 inches, White, Box of 100 (44082) - Quality Park

BISS: Pratt MJ-6 Self-Seal Stay Flat Mailer, White, 12.75" x 15" (Pack of 100) - Pratt

Office Product: S.P. Richards Company Clasp Envelope, 32 lbs., 12 x 15-1/2 Inches, 100 per Box, Kraft (SPR09110) - S.P. Richards Company

Office Product: 500 12" x 15.5" Poly Mailers Shipping Mailing Envelopes Bags Low Cost 2.5 Mil Thick 500 / Case - PackagingSuppliesByMail

Office Product: 500 12x15.5 WHITE POLY MAILERS ENVELOPES BAGS 12 x 15.5 - ValueMailers

Office Product: 1000 12x15.5 WHITE POLY MAILER ENVELOPES BAGS 12 x 15.5 - Propackagingsupply

Office Product: iMBAPrice 50 - 12 x 15.5 Premium Matte Finish Self-Sealing Non-Padded White Poly Mailers/Mailing Envelopes/Bags (iMBA-5PM-50) - MHL COMPUTER SYSTEMS INC,

Office Product: 100 (One Hundred S5 (Dimension 12" X 15 1/2") Poly Mailers) Tear-proof, Water-resistant and Postage-saving Lightweight Self-seal Poly Mailers/ Shipping Bags. - Prestige International Trading

Office Product: Quality Park Redi-Seal Catalog Envelopes, 12 x 15.5 Inches, Kraft, 100 per Box (44067) - 0

Office Product: 25 #6 12.5x19 Premium Poly Bubble Mailers Self Sealing Padded Envelopes Mailers-Shipping Bags(15+10) - M4L

Office Product: 200 12x15.5 WHITE POLY MAILERS ENVELOPES BAGS 12 x 15.5 - ValueMailers

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Envelopes 12 X 15 Popular Q&A

Q: Can I put a large 12"x15" envelope in a USPS mailbox?
A: YES! If your envelope weighs more than 1 oz. or is being mailed outside the United States - or if it's larger than 6 1/8 inches by 11 1/2 inches by 1/4 inch - a... Read More »

Q: How much will it cost to mail a 9X12 envelope that weighs 1.5lbs?
A: According to the Priority Mail options at that postal calculator, a 9.5" × 12.5" flat-rate Priority Mail envelope can be sent for $4.95. If you use only 44¢ sta... Read More »

Q: How to Address a 9x12 Envelope.
A: 1. Turn your envelope horizontally on your work space. 2. Print the name of the recipient of the envelope. This is the first of three (or four, if you are sendi... Read More »

Q: How to Mail 9 X 12 Envelopes.
A: 1. Determine which type of 9-inch by 12-inch envelope is appropriate for you. If you're mailing something that should not be bent or may be fragile, a padded en... Read More »