Buyer information, not installation instructions. Requirements depend on the adopted local code and exact product. Electrical work and site diagnosis should be performed by qualified professionals.
A blank-face GFCI has TEST and RESET buttons without plug sockets. It provides ground-fault protection for a connected load. You may also see this format called faceless or dead-front. [Source]
Our GL20 is a 20A, 125V self-test model with side/back wiring for indoor use. Choose this format when the project needs a separate protective device and accessible test/reset controls. [Source]
Blank-face device, receptacle or cover?
| Item | What is on the front | What to specify |
|---|---|---|
| Blank-face GFCI | TEST / RESET controls, no plug sockets | The protective device and intended load |
| GFCI receptacle | Plug sockets and TEST / RESET controls | The receptacle rating and required protection features |
| Blank wallplate | A plain cover | The plate dimensions and mounting arrangement; it provides no GFCI function |
Write the device name and model on the bill of materials. “Blank GFCI plate” can be read as either a protective device or a plain cover. If a plug-in outlet is needed at that position, specify a GFCI receptacle.
Specify the GL20 and its protected load
The project drawing should identify the protected load and the position of the TEST/RESET controls. Downstream protection follows the electrical connections through the GFCI; proximity along a wall does not establish protection. [Source]
For GL20, include the intended equipment and location in the review. Its indoor rating has no weather-resistant designation. The installer needs the exact model instructions to approve the load arrangement and access to the controls.
A useful order line starts with “GL20, 20A, 125V, blank-face self-test GFCI”, followed by finish, quantity and the required wallplate or pack. Match the sample to that configuration.
GL20 certification documentation remains under review in our library. Request its exact-model record before approval; the supplied certificate covering other GFCI models does not establish GL20 coverage. [Source]
Compare the receptacle models if you need plug sockets at the device. The sourcing guide explains the model and document checks for a larger GFCI order.
Where a blank-face device actually saves a run
A blank-face GFCI earns its place at a junction that needs protection but not a receptacle. Picture a bathroom wall where the circuit continues to a light or a fan: the protection has to sit upstream, and nobody wants a socket at chest height next to a towel rail. The GL20 closes that gap. It is a 20 A device with no openings, so it protects what is wired downstream and offers nothing to plug into.
The alternative — moving the protection to the panel or to a receptacle further along — usually costs more in cable and time than the device itself. That is the argument to make to a contractor, and it is why the blank-face model survives in a catalogue dominated by receptacles.
Two things go wrong at order stage. The first is buying a blank-face device for a location that later needs an outlet; the fix is a GT20 or GW20, not a different plate. The second is the plate: a blank-face device still needs a wallplate, and it needs one with a device opening so the TEST and RESET buttons stay reachable — a solid cover would hide the very controls the device depends on.
GL20 sits outside the documented shortlist in the August 16, 2022 addendum to E504391-20210212, and its record is still under review in our library. Request the exact model document before the specification is issued rather than relying on the family page.
Sources & further reading
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