Protective card sleeve question

By fionn5, in Warhammer: Diskwars

My copy of the game should arrive tomorrow (maybe my question will be answered with it?).

I was wondering what the Protective card sleeves icon is meaning when looking at some of the Warhammer diskwars pages. It shows a number '1' surrounded in a grey square.

I found a Fantasy Flight page which mentions the different types of protective sleeves that are available. I believe in this case the grey square would refer to this supply item:

Standard Card Game
Card size: 2 1/2" x 3 1/2" (63.5 x 88 MM)
Package Color Code: Gray

If I am correct, what is the number '1' refer to? (talking about the '1' that is in the grey square within the protective sleeve icon in the web pages) Is it something to do with the quantity of protective sleeves needed? (meaning that not that many would be required?)

You got it ;)

Yeah, 1 implies one packet of sleeves is enough to protect all the cards in the game :)