Hello home builders,
We are right in the middle of the house-building hustle; in two weeks, the floor slab between the ground floor and the upper floor will be installed.
Since I need to cast two concrete columns at the entrance area, I checked with my electrician about flush-mounted mailboxes and flush-mounted intercom systems.
I was offered a great option from SIEDLE (Steel version with an integrated mailbox), but it costs 2485 euros gross. I find that quite expensive...
Therefore, my question is: Does anyone have experience with such a flush-mounted system from Siedle, OR does anyone possibly know a more affordable supplier or have a better idea?
I would be very grateful for any help.

We are right in the middle of the house-building hustle; in two weeks, the floor slab between the ground floor and the upper floor will be installed.
Since I need to cast two concrete columns at the entrance area, I checked with my electrician about flush-mounted mailboxes and flush-mounted intercom systems.
I was offered a great option from SIEDLE (Steel version with an integrated mailbox), but it costs 2485 euros gross. I find that quite expensive...
Therefore, my question is: Does anyone have experience with such a flush-mounted system from Siedle, OR does anyone possibly know a more affordable supplier or have a better idea?
I would be very grateful for any help.