Edit - While typing this up @gb00s posted his - looks like a winner!!!!
If you can't find one here and ingress airflow works for you then you might check this listing.
I needed 4 for a project and the communication with the seller was excellent prior to purchase. The 4 post arms also helped for my project. The listing says they ship INTL but no idea what they will charge to ship to DE. They shipped the switches in a box and the arms in a tube, all with padding - so they messaged me.
My switches are scheduled to arrive this coming week. If you haven't found one by then I'll post here with how well they were packed.
I have no affiliation with the seller, I'm only a consumer.