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: Two windows show both the return address and the recipient's address; commonly used for checks. Recommended Purchase Options Choose based on your volume and specific security needs: High-Volume Business Essentials Staples Self Seal Security Tinted Window Envelopes Go to product viewer dialog for this item. Jam Paper Business Commercial Window Envelopes Go to product viewer dialog for this item.

: The 4 1/8" x 9 1/2" business staple for letters and invoices.

Specify if you use or another software for check alignment. Go to product viewer dialog for this item. Quality Park Redi-Strip Security Tinted Window Envelope buy window envelopes

: Features a strip that seals instantly without moisture.

Office Depot Security Envelopes Left Window Clean Seal White Box of 250 Walmart - Office Depot LLC Go to product viewer dialog for this item. : Two windows show both the return address

: Features a blue/patterned interior to prevent prying eyes from reading sensitive data.

Quality Park Redi-Seal Security Tinted #9 Double Window Envelopes Go to product viewer dialog for this item. : The 4 1/8" x 9 1/2" business

Window envelopes streamline business mail by showing recipient addresses directly through a transparent film. This eliminates the need for separate labels or hand-addressing, which is ideal for invoices, checks, and statements. Key Types of Window Envelopes