![Amazon.com : Heavyweight Blank Postcard Paper for Printing - White - 250 Sheets / 1000 Postcards - Perforated 4 per Sheet - Thick 80lb Cover Cardstock - Inkjet/Laser Printable : Office Products Amazon.com : Heavyweight Blank Postcard Paper for Printing - White - 250 Sheets / 1000 Postcards - Perforated 4 per Sheet - Thick 80lb Cover Cardstock - Inkjet/Laser Printable : Office Products](https://m.media-amazon.com/images/I/51Mu-M2mBtL._AC_UF350,350_QL80_.jpg)
Amazon.com : Heavyweight Blank Postcard Paper for Printing - White - 250 Sheets / 1000 Postcards - Perforated 4 per Sheet - Thick 80lb Cover Cardstock - Inkjet/Laser Printable : Office Products
![Amazon.com : PrintWorks Heavyweight Printable Postcards for Mailings, Flashcards, and More, 67lb/147gsm, 4 Cards Per Sheet, 250 Sheets, 1000 Cards Total, White (04299) (4.25 x 5.5 Inches Postcard Size) : Office Products Amazon.com : PrintWorks Heavyweight Printable Postcards for Mailings, Flashcards, and More, 67lb/147gsm, 4 Cards Per Sheet, 250 Sheets, 1000 Cards Total, White (04299) (4.25 x 5.5 Inches Postcard Size) : Office Products](https://m.media-amazon.com/images/I/81iXMqExKBL._AC_UF350,350_QL80_.jpg)
Amazon.com : PrintWorks Heavyweight Printable Postcards for Mailings, Flashcards, and More, 67lb/147gsm, 4 Cards Per Sheet, 250 Sheets, 1000 Cards Total, White (04299) (4.25 x 5.5 Inches Postcard Size) : Office Products
![Amazon.com : Hamilco White Cardstock Thick Paper - Blank Index Flash Note & Post Cards - Greeting Invitations Stationary 4 X 6" Heavy Weight 80 lb Card Stock for Printer - 100 Pack : Office Products Amazon.com : Hamilco White Cardstock Thick Paper - Blank Index Flash Note & Post Cards - Greeting Invitations Stationary 4 X 6" Heavy Weight 80 lb Card Stock for Printer - 100 Pack : Office Products](https://m.media-amazon.com/images/I/61oosqb8R+L.jpg)
Amazon.com : Hamilco White Cardstock Thick Paper - Blank Index Flash Note & Post Cards - Greeting Invitations Stationary 4 X 6" Heavy Weight 80 lb Card Stock for Printer - 100 Pack : Office Products
![Paper 101 - Paper Weight Guide | About Paper Weights and Paper Terms | Paper weights, Printer paper, Cardstock paper Paper 101 - Paper Weight Guide | About Paper Weights and Paper Terms | Paper weights, Printer paper, Cardstock paper](https://i.pinimg.com/originals/c0/92/26/c0922639eb44945bfe9198798cc679ee.jpg)