What size is a #10 Envelope?

The size of a #10 Envelope is 9.5 x 4.125 inches.

If you order this windowed, the window placement will be 1/2" from the bottom and 7/8" from the left side, as indicated in our template

This is a standard business size envelope (also know as "commercial" or "legal" envelope). This envelope fits an Letter size sheet of paper folded into three-panels. This is an envelope size commonly used by companies to send bills and invoices.

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