Hi Amy,
These speakers are not compatible with this mount. The speakers weigh over 12lbs and this mount is compatible with speakers up to 8lbs.
Thanks,
Nate @ SANUS

Hey Vin,

Unfortunately, this mount will not work with the Sonos One SL as there is no mounting hole on the back of the speaker. I'd recommend checking out the "Sanus Wireless Speaker Wall Mount Sonos ONE, ONE SL, Play:1, Play:3 - Tool Free Tilt & Swivel Adjustments for Best Audio - Single (White) - WSWM21-W1".

Thanks,
- Haydn @ SANUS

Hi Doug,

Thanks for reaching out. Our customer support team should be able to help you out with this question. They can be reached at 1-800-359-5520 or info@sanus.com.

- Katie @SANUS

Hey VD,

This mount and the SONOS Play:3 are a perfect fit. Let us know if you need anything else.

Thanks,
Jake @ SANUS