GFCI, USB Outlet or Smart Switch? Which Switch Plate You Need

November 10, 2026  ·  VARØ Industries
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Got a GFCI, a USB outlet, a smart switch or a dimmer and not sure which plate to order? The short answer: if the device has a rectangular face, choose Rocker/Decora. This 39-second video shows you what to look for.

Why One Plate Fits All of These

Decorator style is the industry-standard opening, and a whole lot of modern devices share it. That one rectangle covers:

So when you're shopping for a plate, you don't need a special "GFCI plate" or "USB plate." If the face of the device is a rectangle, the Rocker/Decora opening is the one you want.

How to Be Sure

Want to double-check? Measure the face of the device. The Decora opening is 1-5/16" wide x 2-5/8" tall. If your device's face matches that rectangle, you've got your answer.

If you're working out a box with more than one device in it, count them left to right. My posts on what a gang is and toggle, Decora and duplex walk through the rest, and the wall plate buying guide covers the common mix-ups.

Still not sure? Send me a photo through my Etsy shop and I'll point you to the right plate.

Plates for Every Opening

I make wood switch and outlet plates with Rocker/Decora openings, plus backing plates from 1 to 6 gang for devices that sit out from the wall. If you need one of those, here's how to attach a backing plate. You can browse everything on the switch plates page, or check switchplates.info for sizing, wood types and fit.


More short how-tos on the VARØ Industries YouTube channel.

Frequently Asked Questions

What switch plate does a GFCI outlet need?
A Rocker/Decora (decorator style) plate. GFCI and AFCI outlets use the industry-standard decorator opening.
Do USB outlets and smart switches use the same plate?
Yes. USB-A/USB-C charger outlets, smart switches, rocker switches and most dimmers all share the decorator style opening. If the device has a rectangular face, choose Rocker/Decora.
How big is a Decora opening?
The decorator opening is 1-5/16 inches wide by 2-5/8 inches tall.

Sources & References

  1. Watch on YouTube: GFCI, USB or Smart Switch? Pick This Plate
  2. Wood switch and outlet plates
  3. Backing plates (1 to 6 gang)
  4. Sizing, wood types and fit guide
  5. VARO Industries on Etsy