Hi @Shailesh Mistry, Thank you for reaching out, and welcome to the community. About your question on the dimensions of the box for packaging on the Sonos Sub Gen 3 and the Sonos Arc,  I consulted this information from our Sales team, here are the details.

Sonos Sub Gen 3 - 21x19x9 in.

Sonos Arc - 50x9x8 in.

Let me know your thoughts on the advice above.

The Sonos community is always here to help.

Thanks @Simon B for providing this information. I really appreciate it.

Hi @Shailesh Mistry, thanks for the update and You’re Welcome. If there is anything else I can do for you, please, don’t hesitate to let me know.

We're here to answer any further questions you have.