Hello, We use a Brother HL-3170CDW-D laser printer. We cannot find the specs for paperweight and I understand that you would not know either. But, could you please point me to the heaviest, white, cardstock that is both A) compatible with color laser printers, and B) most often will fit laser printers.

Most laser printers can handle a medium weight 80 lb cover weight stock.  Unfortunately, we cannot guarantee that your printer will print on the 80 lb..  All the smooth finish stocks should print well with a laser printer.  Here is a link to our paper weights explained https://www.cutcardstock.com/pages/size-weight-info

how many packages are in a case?

There should be 10 reams in a carton of card stock.

What is the postconsumer recycled content (percentage) in this paper?

30% post consumer recycled content

Hi! Does the 250 sheet earthchoice colors pack come with all the colors that I see on the image? I'm confused because I would like to order that pack with the range of colors I see on the image but I also see that when adding it to the cart I have to choose only one color. I need many colors.

Each package comes with only one color in it.  When you choose a color from the drop down menu, you should see the color image change to the color that you are ordering.  If the color is not showing, try refreshing your screen.

Hello! What is the difference between the smooth finish and the vellum finish?

Many people cannot tell much of a difference between smooth and vellum.  The vellum has a very slight (almost not noticed) texture to it.