Archival Greeting Cards Pack (20 5x7" Cards, Matching Envelopes) Inkpress Archival Greeting Cards 7x10" Scored Greeting Card Paper (20 Sheets) - 20 Matching Envelopes - Inkpress Warranty Quantity: 20 sheets Basis Weight: 215 g/m2 Thickness: 12 mil (0.012") Brightness: 99%