Box Shelf : Under-view

Class 0 - No Re-bar

Class 1 - (1) Rebar

Class 2 - (2) Rebars

What You Should Know About Shelving:

• Not all shelving is the same. There are many different kinds of shelving but they generally fall into three distinct categories: INDUSTRIAL GRADE shelving, COMMERCIAL GRADE shelving, and HEAVY DUTY Die Rack shelving.  They are distinguished by their capacities (how much weight can be distributed over the entire area of the shelf-- this is called the "uniform, or distributed load capacity"), the gauge of the steel used, and the construction of the shelf itself. These shelving units are either OPEN (the back and sides are not enclosed, but use "sway braces" or X-braces to stabilize the unit and give it lateral rigidity) or CLOSED, using light gauge steel panels to cover the back and sides. Open shelving is, by and large, the most common shelving used in industrial applications.
   

• Do not be misled by GAUGE! Briefly, the lower the gauge of the steel used, the thicker the steel (e.g. an 18 gauge steel shelf is thicker– has more steel, is heavier– than a 22 gauge shelf). Does this translate into greater capacity? NO! It generally translates into unnecessary cost. The most important feature of a shelf is NOT its GAUGE ... but its CONSTRUCTION! 
   

•  18 Gauge vs. 20 Gauge: A typical 36 in. wide x 18 in. deep "Class 0" 18 gauge steel shelf with two bends on the sides  is rated (depending on the manufacturer) at around 600 lbs. The same size shelf in 20 gauge steel with a box construction on the sides is rated at 850 lbs.! Even a 22 gauge box shelf yields a 600 lb. capacity. 
   

• The shelves on most units are adjustable on 1-1/2" centers by means of compression clips. in other words, you need not nut-and-bolt each corner of the shelf to the posts. The shelf rests on removable clips that are dropped into the posts, and the shelf is pressed down over them, wedging it securely in place– hence the term "compression" clips. Compression clips are JUST as sturdy and reliable as nuts and bolts – an entire unit can be set up using clips only – with the advantage of your being able to move each shelf just by lifting it up, and re-positioning the clips and the shelf. No tools. Set-up time is dramatically reduced since no tools are required except for the side braces and back braces.
   

• Even the lightest duty shelving sold by reputable distributors called "commercial shelving" is superior to ANYTHING you buy at the large warehouse stores, or your local hardware store.
   

• Reputable Manufacturers of Good Quality Industrial Steel Shelving: Triboro, Penco, Lyon Metal, Equipto, Tennsco, Parent Metal,  Hodge Manufacturing, Schaeffer, Scotland Rack, Adapto. For Wire  Shelving : Metro (Inter-Metro), Gillis. For Pallet Racks: Husky, Lyons, and Penco, .

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