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#9 Envelopes

#9 Return Envelopes | #9 Security Envelopes

Mail checks with #9 Envelopes! The #9 Envelope, measuring 3 7/8 x 8 7/8 inches, is ideal for mailing checks, payments, and other standard size documents. Protect your sensitive information with a security envelope! Security envelopes feature a security tint printed on the inside that will block prying eyes from seeing the contents. Save time with a #9 Window Envelope. No need to address every envelope - simply print the address on your document to show through the convenient poly-film window. Ideal for business reply use.

#9 Envelopes fit easily into the #10 envelope, the standard business size, and are perfect for use as a return envelope. Include them with your invoices or statements so your recipient can easily send back a payment or check.

Personalize your #9 envelopes with a company logo, address, unique messaging, or other custom design! Want to see your envelopes before ordering? Request a FREE PDF proof today! Choose the right envelope, upload your artwork, and fill in the proper text fields. Tell us a bit about your design and our expert designers will whip up a proof so you can be sure you're getting exactly what you're looking for.