Shape: Windowed envelope, wallet type envelope, diamond type envelope.
Size: According to clients' specifications
Paper material: Ivory card paper, art card, art paper, Kraft paper and grey board, white paper board
Dimension (mm): 220 x 110 or other
Packing: Standard export packing
Type: Regular, window, stationery, booklet, open end, and invitation envelopes. (full color or one or two Pantone colors)
Contact us without delay for window envelope printing

ISO Envelope Standards for you referece:

 Name           Size, mm         Size, in                 Content Format and Comments
 C3                324 x 458         12 3/4 x 18           A3 sheet; Not very common
 B4                250 x 353          9 7/8 x 13 7/8      C4 envelope
 C4                229 x 324           9 x 12 3/4            A4 sheet; Very common
 B5                176 x 250           7 x 9 7/8               C5 envelope
 C5               162 x 229           6 3/8 x 9                A4 folded once = A5; Very common
 B6                125 x 176           5 x 7                      A4 folded in quarters; Very common
 C6               114 x 162           4 1/2 x 6 3/8         A4 folded in quarters; Very common
 DL               110 x 220           4 1/4 x 8 3/4         A4 sheet folded in thirds, A5 sheet folded in half lengthwise; Very common
 C6/C5         114 x 229          4 1/2 x 9                A4 sheet folded in thirds; Common
 C7/6            81 x 162             3 1/4 x 6 3/8         A5 sheet folded in thirds; Uncommon
 C7                81 x 114            3 1/4 x 4 1/2         A5 sheet folded in quarters; Uncommon

Note: Although DL is not part of the ISO C series, it is a very widely used standard size.

Envelope and Flyer Printing