Rack Sizes

There are four main types of equipment racks; these include Commercial racks, Heavy-Duty racks, Industrial racks, NEMA racks (Weather), or Military racks (Shock, vibration and Weather). The following link provides Equipment Rack Manufacturers

Standard Rack Height;; 21" to 84", in any 1 3/4" increments
Standard Rack (outside) Depth;; 17", 24", 29" and 36"
Standard Panel Widths: 482.6mm (19 inch), 609.6mm, 762.0mm (per EIA 310)
Standard Panel Widths: 19", 24", 30", adapters are available for mounting 23" equipment

Rails; Mounting Rail Spacing for Rack Mounting Equipment

EIA-310 does not specify rack depth. So be sure to specify or know the internal depth, usable depth and overall depth.
Height is also given in 'U', 1U = 44.45mm, 2U = 88.90mm

Rack Door Options;
Solid Door
Vented Door [vented top, vented bottom or both vented]
Tempered Glass Door [normally just a front door option]
Perforated Door [normally just a rear door option]

Rack Top Panel Options;
Solid Top
Vented Top
Fan Top [Multi-Fan Top, or one large top mounted fan]

Rack Side Panel Options;
Solid Sides
Vented Sides
Open Sides [normally used with two side mounted racks]

Enclosed Vertical Rack
Vertical Rack

Be sure to consider the other options available when specifying an equipment rack;

Equipment Rack Grounding next page in the section.

Also refer to the page covering Rack Equipment Installation for recommendations on how to install equipment within an equipment rack.

Index page; How To Specify a Equipment Chassis

Design Hint: There also another large group of options or accessories that can be obtained for equipment rack relating to cable management. As in devices that either attach to the inside rack walls or rails to control cable flow;
Horizontal Cable Management or Vertical Cable Management

PC motherboard

Distributor rolodex Electronic Components Electronic Equipment EDA CDROM Software Engineering Standards, BOB card Cabled Computer Bus Electronic Engineering Design Table Conversion DB9-to-DB25.
DistributorsComponents Equipment Software Standards Buses Design Reference