Tecmojo 12U Open-Frame Network Rack Review

The frame is cold-rolled steel with a black powder coat, and it weighs 28.6 lb. Buyers on Amazon most often praise its sturdiness and how easily it goes together, and one customer notes it holds several servers plus 100-pound batteries. Once the plates are seated it stands square.

The kit is the strongest argument for this rack. This one ships with two ventilated shelves, four shelf stops, four velcro straps, a set of equipment mounting screws, mounting hardware and a comprehensive manual. The manual is included and covers the build.

It stands on the floor or mounts to a wall on 16-inch stud spacing, and the drilling template is there for the wall job. The load ratings are 260 lb floor-standing and 130 lb wall-mounted. Numbered U positions, anti-slip shelf stops and load-bearing back supports make the layout easier to plan, and the top panel adds a usable surface with cable pass-throughs. The open layout gives easy access to device ports.

Compatible racks in the same family stack and expand, and the frame suits AV gear such as audio interfaces, amps and transmitters as well as networking. The warranty is 3 years.

12U is the nominal rail height: 12 units of 1.75 inches each, or 21 inches, which matches the 21.02-inch external height. The frame's top and bottom plates take up positions at each end, and when the rack is wall-mounted the rear brackets take up more.

Plan on roughly 10U usable floor-standing and roughly 8U when wall-mounted. The square-hole side gives a little more than the round-hole side.

Lay out your gear from the usable positions, not the headline number. If your plan needs all 12U, this frame will run out of room before the list is filled.

Depth decides whether your gear goes in. The external depth is 20.15 inches and the included shelves are shallow, so this is a shallow-depth rack. Measure the deepest chassis you own, then add room at the front for bezels and cable bend and at the back for power cords.

The 19-inch figure is the rail spacing, not the external width, which is 20.47 inches. Leave clearance around the frame for cables and airflow.

The rack ships flat and goes together with the included screws and the manual, which recommends a power driver. One buyer on Amazon describes assembly as quick and the instructions as clear, with the online video as a backup.

Some friction comes up in the same feedback. The complaint that comes up most among Amazon buyers is holes that do not line up, and some buyers report the rear shelf supports not aligning properly on one side. Screws can cross-thread on the top cover and the shelf stabilizers. The frame seats square once everything is lined up, but budget patience for the build.

Wall mounting

The 130 lb figure is the rack's limit, not the wall's. The included wall screws suit light loads.

Floor standing

On the floor the rack carries up to 260 lb. The base version has no casters; the caster version of the same rack does.

The two 1U ventilated shelves each come with shelf stops and load-bearing back supports, and they can be mounted cantilever-style or with four-point support. The stops keep devices from sliding.

The top panel adds a usable surface and has cable pass-throughs. The open-frame layout gives the best airflow and the easiest access to ports and drives. It offers no dust, noise or physical-security control, which is the trade-off against an enclosed cabinet.

Usable space runs under the nominal 12U, so a full 12U plan will not fit. The shallow depth rules out full-depth servers and big rack UPS units.

The frame is only partially cage-nut compatible: threaded holes front and rear, square holes on the sides. You cannot cage-nut both faces, and swapping gear means screwing into the frame. Buyers on Amazon are divided on fit and size, which tracks with the usable-space math.

Assembly brings alignment and cross-threading friction, and the included wall screws are light-duty for the rack's wall rating. The base version has no casters. An open frame also means no dust, noise or security control.

The same open frame rack also comes in a 16U size and a 20U size, each floor standing or wall mounted and each with two 1U shelves and mounting hardware. The 16U stands 28.03 inches tall and weighs 31.7 pounds, and the 20U stands 35.03 inches tall and weighs 35.4 pounds, against 21.02 inches and 28.6 pounds for the 12U. Both larger frames share the 20.15-inch depth and 20.47-inch width of the 12U, so they add rack units without adding depth. Choose the 16U when you need a few more units than the 12U gives you, and the 20U when you want the most rack units in this line.