Blank Colored 4up Postcards for Printers - Print Customized Postcards from your Home or Office Printer Made from a 65lb Cover Cardstock & Works with your Inkjet or Laser Printer Microperforated to break apart easier and leave cleaner edges Sheet measures 8 1/2" x 11" - Postcards measure 4 1/4" x 5 1/2" - Yields 4 postcards per sheet Compatible with most design software - Uses the standard 4up Postcard layout - Made in the USA - Approved Size for Mailing Desktop Publishing Supplies, Inc. Brand 4up Postcards are designed to make it simple, efficient, and affordable to create your own postcards from your home or office printer. 4up postcards are laid out evenly on an 8 1/2" x 11" sheet of paper and measure 4.25" x 5.5" each. Our postcard sheets are microperforated with 72 perforations per inch for clean edges and easy separation. These postcard sheets are made from a 65lb Cover cardstock (176 gsm) and are colored on both sides. inkjet & laser printer compatible. 25 Sheets / 100 Postcards