I bought three large (tall) Gladiator cabinets during an end of model warehouse close out sale. I believe the model is S2. I also bought several packages of the wall racks. The tall cabinet's instructions recommend three. Nice looking cabinets, and good for light items. Can hold up to 250 lbs.
Buy the wall mounts if you want the versatility to move the wall hung Gladiator cabinet easily a few inches left or right. Otherwise, bolt three 2x4 to the wall cut to the indented dimensions on the back, and bolt the Gladiator to the 2x4. If I wrre to elevate the other two i bought, that is how i would do it. I don't plan to move them around. Easier to mount on 2x4 than the Gladiator wall racks. And the 2x4 method is more sturdy, and less expensive. That is how I hung my small Newage cabinets. See more at my "Wall of Steel" thread.