Window Envelopes in Many Sizes - White, Colored, Inside Tint

Order Window Envelopes and get FREE shipping! Available in many sizes, these envelopes are perfect for mailing checks or other documents. Choose from white or pastel colors, in many sizes and styles - ideal for a variety of business uses.

Window envelopes are available in #6 3/4, #7 3/4, #8 5/8, #9, #10, #11, and #12.

Looking for a color, size, or style you don't see on our site? We have hundreds of items available for Special Order at great prices, with fast shipping.

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Window Envelopes - Size Guide


Window envelopes are most commonly used for mailing checks, invoices, or other materials, with the recipient address printed on the insert. If you?re not sure what size you need, measure the length (width) and height of your document and/or check. You'll want to choose an envelope that is at least 1/16" or 1/8" larger then your insert, to make sure it fits.

Not sure what size you need? Our size guide can help you pick the right envelope, for the right reason.

#6 3/4 (3 5/8 x 6 1/2) - Fits a personal check, plus a small insert - up to 3 1/2 x 6 1/4.
#7 3/4 (3 7/8 x 7 1/2) - Slightly larger then a #6 3/4. Often referred to as a Monarch envelope.
#8 5/8 (3 5/8 x 8 5/8) - Ideal for many printed commercial and business checks.
#9 (3 7/8 x 8 7/8) - Return envelope. Fits comfortably inside a standard #10 envelope.
#10 (4 1/8 x 9 1/2) - Standard business envelope. Fits an 8 1/2 x 11 piece of paper folded in thirds.
#11 (4 1/2 x 10 3/8) - Larger then a standard #10 envelope. Can fit a check and folded documents.
#12 (4 3/4 x 11) - Large business envelope. Often used for mailing special checks or statements.

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Our Team will be happy to help make your order (and life) a little easier. You can contact us
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847-425-1070.

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