ScorpionÂ® TMA Truck Mounted Attenuator. The Scorpion line of Impact Attenuators, by TrafFix Devices, Inc., are truly different by design. The Scorpion TMA consists of strut and cartridge sections that are linked together on a support frame.
Any questions you can e mail me through my avatar. The metal used between tile and carpet is called a Z bar. It is a hidden metal that is put under the wood tack strip and the carpet is tucked in to it. The result is a hidden metal and the carpet looks as if it were tucked tight to the carpet. Transition strip.
Proably 144 if the room is square. You will grout between the tiles up to a quarter of an inch, so you'll be cutting some of the tiles along two walls (or all four walls). You should buy extra tiles to account for breakage during installation and to have matching tiles should any get damaged later (even years).