Wall-mounted vs floor-standing vs open frame racks
Before you size a cabinet, you have to choose the type of rack, and the three families - wall-mounted, floor-standing and open frame suit very different situations. Getting this decision right first saves sizing something that was never the right form factor. This compares the three on capacity, security, airflow, access and cost, and points to where each belongs.
A wall-mounted rack is a small, enclosed cabinet fixed to a wall, ideal for a handful of U in an office, retail or small comms cupboard where floor space is tight and the kit is light. A floor-standing cabinet is a full enclosure that stands on the floor, giving the most capacity, depth and physical security for servers and larger networks. An open-frame rack is a skeletal 19-inch frame with no doors or sides, giving the fastest access, the best natural airflow and the lowest cost, but no security or dust protection, so it suits secure, controlled rooms. Choose by how much kit you have, how secure the room is, and how much you need to get at the equipment.
For more on specifying the cabling that runs into these racks, see our Wall-Mounted Cabinet.
The Three Rack Types
- 1 Wall-mounted racks A wall-mounted cabinet lifts a small amount of equipment off the floor and onto the wall, typically a switch, a patch panel and maybe a small UPS. It saves floor space, keeps kit tidy and lockable in an office or shop, and is the natural choice for edge locations and small sites. Its limits are capacity and depth: it holds only a few U and shallower equipment, so it is not for servers or a growing core.
- 2 Floor-standing cabinets A floor-standing cabinet is the workhorse of a comms or server room. It offers the most U, the depth for servers and long equipment, doors and sides for security and dust protection, and the load rating for heavy kit. It is the right choice wherever there is real capacity, servers, or a need for a secure, enclosed environment. The trade-off is footprint and cost: it takes floor space and is the most substantial option.
- 3 Open-frame racks An open-frame rack is just the 19-inch mounting frame: two or four posts, no doors, no sides. That makes it the cheapest, gives the best natural airflow, and makes every piece of kit and every cable instantly accessible, which technicians love in a patch-heavy room. The catch is that it offers no security and no dust protection, so it belongs only in a locked, controlled room where physical access is already managed.
Compared: Capacity, Security, Airflow, Access, Cost
| Wall-mounted | Floor-standing | Open frame | |
|---|---|---|---|
| Capacity | Low (few U) | High | Medium–high |
| Security / dust | Enclosed, lockable | Enclosed, lockable | None |
| Airflow | Limited | Managed (with fans) | Best (natural) |
| Access | Moderate | Front/rear doors | Fullest, all sides |
| Best for | Small sites, edge | Servers, secure rooms | Secure patch rooms |
Once you have chosen the type, size it properly against the kit going into it and the room's constraints. CNet manufactures all three, in a range of U heights, depths and finishes, alongside the Cat6 and Cat6A cabling that typically runs into them.
Frequently Asked Questions
-
When should I use an open-frame rack instead of a cabinet?
Use an open frame in a secure, controlled room where physical access and dust are already managed, and you want the best airflow, fastest access and lowest cost. Use an enclosed cabinet where you need security, dust protection, or the kit is in a shared or exposed space. -
Can I put a server in a wall-mounted rack?
Generally no. Wall-mounted racks are shallow and hold only a few U of light equipment such as switches and patch panels. Servers need the depth, capacity and load rating of a floor-standing cabinet. -
What is a 19-inch rack?
19 inch refers to the standard width between the mounting rails that virtually all rack equipment is built to. Wall-mounted, floor-standing and open-frame racks are all 19-inch; the difference is the enclosure and capacity, not the mounting standard.
Build on a CNET System
CNet Cabling Systems manufactures and supplies structured cabling, network cabinets, racks and accessories, backed by a 25-year system warranty when installed through a registered installer. Specify CNET cabinets, racks, PDUs and patch panels through your installer or wholesaler, and build a network that is designed to last.
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