Joinfworld WB15.7X11X5.9 Outdoor Electrical Box Review

The Joinfworld WB15.7X11X5.9 is a white ABS plastic electrical enclosure, 15.7 inches long, 11 inches wide and 5.9 inches deep on the outside, made to be mounted on a wall or on a pole. It ships with a 12 V fan, two large heat-dissipation holes, one on each side, and a built-in dust screen.

It is not a rack. There are no rack ears and no 19-inch or 10-inch rail spacing, so nothing in it slides onto rails. The DIN rail inside holds a DIN-rail device, not a rack-width chassis.

Why the plastic matters for network gear

The sheet states the ABS transmits Wi-Fi signals well. An access point or a wireless bridge inside keeps its radio range, where a metal cabinet would screen the signal and cost you coverage. That is the strongest reason to pick this box over a steel enclosure for a wireless device.

Impact resistance and insulation

The sheet also lists high impact resistance and good electrical insulation, both useful outdoors where a plastic box takes knocks and sits near wiring. The about 5.3 lb (2.4 kg) weight of the empty box points to thick walls, which fits the impact-resistance claim.

The 5.3 lb (2.4 kg) weight of the empty box is substantial for plastic of this size, and it tells you the walls are thick rather than thin and flexible. The stainless backplane and the two stainless steel hoops are the right material for a damp location, since they will not rust the way plain steel would.

The inside is smaller than the outside by the wall thickness and the backplane, so plan around the internal space rather than the 15.7 by 11 inch footprint. Measure your device before you buy and leave clearance at both vent holes, or the fan has nothing to move.

Gear that suits the box

• A small network switch
• A PoE injector
• A media converter
• A compact access point
• A DIN-rail power supply to feed the fan

Gear that does not

• Anything that needs rack rails
• Deep servers or long chassis
• Equipment that fills the box and blocks the two side vents

A device that presses against the vent holes turns a vented box into a sealed one, and the heat has nowhere to go.

The waterproof performance the sheet describes rests on the two non-slip buckles clamping the lid down, plus the built-in dust screen. The buckles pull the lid tight along the opening, which is what sheds rain off the top.

The reserved lockable holes are a genuine plus for a shed or a pole installation, since they let you add a second layer of security. A padlock is not included, so plan on buying one if you want to use them.

Buyers on Amazon are largely satisfied: the large majority of ratings are four or five stars, with a small tail of one- and two-star ratings. That pattern means most buyers get what they expected and a minority hit a problem, and the complaints that come up among Amazon buyers center on water getting in, which fits a vented box used where it should not be.

The fan is 12 V and comes with the box. The sheet does not state its airflow, its noise or whether it runs continuously or on a thermostat, so plan to power it from your own 12 V supply and to switch it yourself.

Two side holes plus a fan move air, but the dust screen limits how much. A box that vents is a box that cools; a box that seals is a box that cooks. This product chose venting, which is the right call for a light load and the wrong one for a heavy one.

Sizing your own load

The dust screen outdoors

A box with two open vent holes and a fan is a vented box. It sheds rain off the lid and the buckles pull the lid down, but it is not a sealed enclosure, and the vents are a path for driven rain and humid air.

Mount it where it is sheltered: under an eave, in a carport, inside a garage, on a covered porch, or on a pole under a roof line. Do not put it on an exposed wall taking weather head-on. The dust screen keeps insects and dust out of the airflow; it does not make the box airtight.

One buyer expected a sealed box. That is a mismatch between the product's design and some buyers' expectations, not a defect in the build.

A vented box breathes with the day-to-night temperature swing. Moist air comes in during the day and condenses on cool metal when the temperature drops, and that is the real long-term risk to electronics in any outdoor enclosure, vented or not.

Mount the box out of direct sun, keep the lid facing away from the weather, and leave the lowest point able to drain. A desiccant pack inside helps absorb what gets in, and it needs replacing once it is spent.

Wall mounting uses the four sets of metal fixing screws; pole mounting uses the two stainless steel hoops. The two cable glands are the cable entry points, so plan the cable routing before you drill.

Drill ABS slowly with a pilot hole first. The DIN rail and grid plate let you mount a DIN-rail device and tie the cables down inside, and the stainless backplane is the surface you screw into. The lockable holes take a padlock, which is not included.

Network gear that lives away from the main rack needs a home that matches the location, and three kinds of housing cover most cases.

The box earns its place when the gear is small, the spot is covered and the signal has to escape. When the wall takes weather, a sealed enclosure with no vent is the safer choice, even though it needs another way to shed heat.