> called twinslot:
Peers to be a global standard. I'm typing on the exact same thing, under another brand (Rubbermaid). (Also comes in a single slot-row.) Stud walls, weak drywall, so I put the uprights on the studs and clipped shelf brackets for desk, overhead shelf, printer shelves. If I get a taller printer I can move the shelves up/down. Sure looks like the exact same stuff. I also used a lot in cellar, where I can't casually re-screw a shelf to another height.
http://www.homedepot.com/p/Rubbermaid-25-in-Twin-Track-Upright-FG4B8700WHT/100003748
http://www.homedepot.com/p/Rubbermaid-24-in-Single-Track-Upright-FG4A6701WHT/100006607