Sizes & standards

Looking for folding sizes? They have a new home: Folding guidelines

Stationery Sizes
Business Card 2" x 3.5"
Postcard 4" x 6"
Rack Card 4" x 9"
Letterhead 8.5" x 11"
Letter (LTR) 8.5" x 11"
Legal (LGL) 8.5" x 14"
Tabloid 11" x 17"
European
Business Card
2.12" x 3.37"
Japanese
Business Card
2.165" x 3.583"
European
Letterhead (A4)
8.27" x 11.69"
Announcement Envelope Sizes
A-2 4.375" x 5.75"
A-6 4.75" x 6.5"
A-7 5.25" x 7.25"
A-8 5.5" x 8.125"
A-10 6" x 9.5"
Extra Large Octavo 4.5" x 5.875"
Open Side Envelope Sizes
No. 8 3.625" x 6.5" (plain/window)
No. 9 3.875" x 8.875" (plain/window)
No. 10 4.125" x 9.5" (plain/window)
No. 11 4.5" x 9.625"
Open End Catalog Envelope Sizes
No. 2 5.5" x 8.5"
No. 3 6.5" x 9.5"
No. 6 7.5" x 10.5"
No. 7 9" x 12"
No. 8 10" x 13"