Can I use Styrofoam ceiling tiles in a grid system?

The short answer is no!

The reason for this is 2 fold:

1. Standard grid system is 24 x 24 inch or 24 x 48 inch, our Styrofoam ceiling tiles are 20 x 20 inches.
2. The tiles only weigh 1oz and are meant to be glued, so even if your grid system was the right size our tiles would not hold in place and would fly away with just small draft.

Here is a link to decorative ceiling tiles for grid systems.