[Amps] CD Cap

[Rich]

I have come across some new CD caps. 560 uF, 400Vdc, porm 20%, temp
105C. 1.312 dia , 2.7 length , snap in.
Looks like all plastic on the outside.
 
Part number is 381561M400A072 , I can seem to find a spec sheet on them.
12 will be going into a 3000/4000v power supply for one 3-500 type tube
SSB amp.
My question is, how much space do I have to have between each cap or can
I box them together?
 
Rich , kd0zz