Outside width of Horizon drivers? (mulling placement inside AV cabinet)

[vkottas]

I know placing the wonderful but outsized Horizon has been discussed a lot but I didn't notice this particular point (apologies if I'm revisiting).

What is the edge to edge distance on the outside of the Horizon's outer woofers?
(e.g. leftmost edge of left woofer to rightmost edge of right woofer)

I'm asking to visualize how close to/overlapping the supports of my AV cabinet they would be if I made the top shelf tall enough to accommodate the center.

I've got a Salamander Synergy rack with 18.5" spacing between front supports and 18" of total interior height (normally divided by one shelf but configurable). Mine is a 3-wide unit. It would be configured something like this: https://www.salamanderdesigns.com/av...rgy-model-236/

It occurs to me that if I really wanted to fit the center inside properly I'd have to expand to four units wide and omit the center post, but I may not have the space for that. That configuration would look more like this: https://www.salamanderdesigns.com/av...rgy-model-245/

I don't know yet what the space in the room will feel like with all the furniture in place. But barring a big AV cabinet change I imagine putting the Horizon on a stand in front of the cabinet (to be flanked by my two Sierra 2s) is likely the acoustic ideal.

-v