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Business Envelopes & Mailers
Bubble Mailers & Envelopes
Business Envelopes
CD/Disk/Video Mailers
Corrugated Mailers
Dura-Bag Mailers
Eco-Shippers Mailers
Kraft Paper Envelopes
Long and Narrow Kraft Mailing Bags | Poly Mailers
Mailing Tubes
Padded Mailers
Paper With Window Business Envelopes
Postal Approved Envelopes & Mailers
Security Business Envelopes
See-Through Mailers
Self Adhesive Shipping Mailer Roll
Stayflats Mailers
Tear-Resistant Envelopes
Tyvek Envelopes
Ideal for mailing invoices, letters, and other documents requiring two windows. Security envelopes feature blue tint for privacy and confidentiality and have gummed flap closure. Top window size is 1" x 3-1/2". Bottom window size is 1-1/16" x 3-3/4".