It appears that the Leviton Triplex outlets are no longer available and the product is listed as discontinued. My best guess is that they weren't technically code compliant?

They were a rather brilliant solution for fitting 3 ground NEMA compatible outlets into the space of a normal outlet.

Are there alternative solutions available?

Edit: The goal is to avoid messing with an outside wall. I have an existing weatherproof outlet where I need 3 plugs. Making it bigger is possible (and in my range of skills), but I'd rather avoid doing so.


New box (either add, or replace smaller with larger), pair of duplex, 4 outlets.

Sure, you want not to do that, but it works, and always has worked.

If you can handle it being 15 amp rather than 20 and a large pricetag, Legrand adorne makes what's claimed to be a 1-gang triplex pop-up outlet. Never seen one in person, and I'd wonder about long-term reliability with it having moving parts.

Triplex pop-up

  • Ooh... that's neat. Unfortunately, won't work for me as I wanted a solution to fit an existing outdoor outlet box. Going with a pair of duplex involves a lot of wall cutting, etc,etc that I wanted to avoid.
    – bbum
    Mar 24 '15 at 21:27
  • 1
    May be simpler to cut a new hole for a new duplex box rather than trying to enlarge the current hole to be a quad. Or bring one out as a surface mount somewhere nearby.
    – Ecnerwal
    Mar 24 '15 at 21:39

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