Yep, this is the big one.  The FR TX is designed for First Response units that use slide-out work stations, requiring the rear cargo doors to swing open fully.  The FR TX fits GMC/Chevy Suburbans, Tahoes and Yukons (from 2000-2004) with rear cargo doors.  Our four-pole system extends the overhead coverage four feet beyond the rear bumper, providing more than double the area of the standard model FR CD-20.  Wind-restraint anchors are built into the forward edge of the canopy and attach to the vehicle doors, providing stability and shelter.