Shop regular envelopes
This style, known as Regular envelopes simply means that it is a closed face envelope with no window. They are the most commonly used in business to send letters, invoices, checks, and other mailings. The #10 size envelope is the most widely used envelope of them all.
#5 Regular Envelopes
3-1/8 x 6-1/4
Non-Mailable Size.
#6-1/4 Regular Envelopes
3-1/2 x 6
#6-3/4 Regular Envelopes
3-5/8 x 6-1/2
#7 Regular Envelopes
3-3/4 x 6-3/4
#7-3/4 Regular Envelopes
3-7/8 x 7-1/2
#8-5/8 Regular Envelopes
3-5/8 x 8-5/8
The "Check" Envelope.
#9 Regular Envelopes
3-7/8 x 8-7/8
#10 Regular Envelopes
4-1/8 x 9-1/2
The most common business envelope, also known as a "commercial" envelope.
#11 Regular Envelopes
4-1/2 x 10-3/8
#12 Regular Envelopes
4-3/4 x 11
#14 Regular Envelopes
5 x 11-1/2
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