Commercial and Official Envelope Sizes

Standard correspondence style envelopes. Open-side style with gummed flaps. Commercial sizes range from Number 5 to Number 63/4. Official sizes range from Number 7 to Number 14.

NO. Size  
5 31/16" h X   51/2" w
6 33/8" h X   6" w
61/4 31/2" h X   6" w
61/4 Window 31/2" h X   6" w
61/2 39/16" h X   61/4" w
63/4 35/8" h X   61/2" w
63/4 Window 35/8" h X   61/2" w
7 33/4" h X   63/4" w
7 Window 33/4" h X   63/4" w
71/2 33/4" h X   75/8" w
73/4 (Monarch) 37/8" h X   71/2" w
73/4 Window 37/8" h X   71/2" w
Data Card 31/2" h X   75/8" w
85/8 (Check) 35/8" h X   85/8" w
85/8 Window 35/8" h X   85/8" w
9 37/8" h X   87/8" w
9 Window 37/8" h X   87/8" w
10 41/8" h X   91/2" w
10 Window 41/8" h X   91/2" w
101/2 41/2" h X   91/2" w
11 41/2" h X   103/8" w
11 Window 41/2" h X   103/8" w
12 43/4" h X   11" w
12 Window 43/4" h X   11" w
14 5" h X   111/2" w
14 Window 5" h X   111/2" w

Window Size & Position

Window Size: 43/4" X 1 1/8". Position: 7/8" from left, 5/8" from bottom.
Position for #85/8 is 5/8 from left, 13/16 from bottom.

Sizes vary according to manufacturer. Check with your CSR to be sure.