Pet Barriers

Hey does anyone know if anybody makes a pet barrier for the FJ that works with the seats folded down?  I have a rottie and a german shepherd and I would love to give them the entire area in the back and not limit them to the area with just behind the rear seats.  I've seen the Springtail Solutions pet barrier and I think its awesome, unfortunately only works with the rear seats up.

Thx for any leads.