Double Window Envelopes

Sender and recipient details are displayed directly from the enclosed document, reducing the need for separate address labels. JAM Paper double-window envelopes include invoice, check, T4, W-2, 1099, ACA, and tax-return mailing styles for billing departments, payroll teams, accounting offices, healthcare organizations, financial institutions, and administrative mailrooms. Sizes include the standard #10, several 5 3/4 x 9-inch check and invoice styles, and a 9 x 12-inch option for larger documents.

Paper weights include 24 lb, 28 lb, and 32 lb, with security tints appearing throughout the collection for documents that contain financial, tax, payroll, or account information. Peel & seal and redi seal closures provide convenient options for recurring office mail and higher-volume processing. These features make double-window envelopes especially useful for statements, checks, tax documents, payment notices, and other structured correspondence that relies on precise information placement.

Colors include white, grocery bag kraft, mandarin orange, wasabi lime green, citrus yellow, midnight black, red, and pool blue. Traditional white supports standard financial and administrative mail, while kraft and bright colors provide more visible options for departments, campaigns, and branded communications. The combination of specialized window layouts, multiple commercial sizes, secure closures, and varied colors gives businesses flexible double-window mailers for recurring billing and document-driven correspondence.