1000 Blank White Postcards- 250 Sheets - 4 Per Sheet (4 1/4" X 6" Each) - 110lb Index - Inkjet & Laser Printer Compatible 4 1/4" x 6" Postcards on an 8 1/2" x 14" Sheet (Legal Size- compatible with most printers) Microperforated for easy & clean separation Made From 110lb Index White Cardstock (199 gsm) - Meets USPS requirements for Postcard rates Works with Inkjet & Laser Printers and Copiers 4 Cards per sheet