Double window check envelopes with peel and seal closure are the standard envelope for mailing business checks without handwriting any address. The envelope has two clear windows on the front face. Your business return address shows through the top window. The payee's mailing address shows through the bottom window. Both addresses come directly from the pre-printed information on your check. Fold the check, insert it, peel the backing strip, press the flap down, and the envelope is sealed and addressed in seconds. Every envelope is security-tinted and manufactured to fit standard US business check formats.
What Are Double Window Check Envelopes and How Do They Work?
A double window envelope has two separate transparent windows cut into the front face, not one. Single window envelopes, which are common in general office use, have one window for the recipient address only. The return address must be handwritten or labeled separately.
Double window check envelopes solve both at once. When a business check is folded into thirds and inserted correctly, the payee address aligns with the bottom window and the business return address aligns with the top window. No labels. No handwriting. No separate address entry of any kind. The address information already printed on the check does all the work.
This is why double window envelopes are the standard format for business check mailing. Businesses processing AP or payroll runs with dozens or hundreds of outgoing checks per cycle cannot afford to address each envelope individually. The double window format turns the check itself into the addressing mechanism.
Peel and Seal Check Envelopes: Why the Seal Type Matters
Check envelopes are available in two sealing styles: gummed seal and peel and seal. Gummed seal envelopes require moisture to activate the adhesive on the flap. You wet the strip, press the flap down, and it bonds. Effective for low volumes.
Peel and seal check envelopes have a protective backing strip over a pressure-sensitive adhesive. You peel the strip off, fold the flap down, and press firmly. No moisture, no sponge, no separate moistener required. The seal is immediate and consistent across every envelope in the batch.
For businesses sealing 30, 50, or 100 envelopes per AP or payroll run, peel and seal is noticeably faster. The process becomes fold, insert, peel, press rather than fold, insert, wet, press. For the gummed seal version of this same double window format, see our double window check envelopes with gummed seal.
Security Tinting and Check Confidentiality
Every double window peel and seal envelope from Checkomatic includes interior security tinting across the full inside surface. This is a dark printed pattern that prevents the content of the envelope from being readable through the paper when held up to light.
Without tinting, the check amount, account details, and payee information can sometimes be partially visible through thin envelope paper. Security tinting eliminates that exposure. The only information visible from outside the sealed envelope is what shows through the two address windows. Everything else is blocked.
Guaranteed to Fit Your Business Checks
These envelopes measure the industry-standard 3 5/8 by 8 5/8 inches and are guaranteed to fit all Checkomatic check formats, including voucher checks on top, checks in middle, and checks on bottom. They also fit most standard US business check formats from other suppliers.
If you are pairing these with computer checks on top or QuickBooks checks on top, both address fields print to the standard positions that align with the double window layout. No alignment adjustments needed in your software.
For a complete business check mailing setup including envelopes and deposit slips, see our full business check accessories catalog.
Why Choose Checkomatic for Double Window Check Envelopes
Checkomatic has supplied business check envelopes from Monroe, NY since 1997. Every envelope is guaranteed to match our check formats and includes interior security tinting as standard. Bulk pricing runs from 100 to 5,000 envelopes with savings up to 65% at higher quantities. All orders carry a 30-day satisfaction guarantee. Standard delivery in 3 to 5 business days. Rush options available when you need supplies quickly.
Double window check envelopes with peel and seal closure are the right choice for any business that mails checks regularly and wants to seal large batches quickly without moisture-activated adhesive. Every envelope ships security-tinted, correctly sized, and ready for immediate use with your existing check stock.
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