Buy on Amazon : http://www.amazon.com/gp/product/B00028SR0K?tag=scratchandsti-20

Photoflex 40 Degree Grid for the Small Size Half Dome Soft Box 9.5 x 35.

40 Nylon Grids - Velcro onto face of soft box giving you precise control of lightspread with no lightspill onto backdrop floor or ceiling
Individually sewn edges - which ensures precise light placement
Carry Bag - included for easy storage and transport