Yes, the holes are for the feet and spike covers to fit in. There is a plywood top plate that screws into the threads for the speaker head studs. This suspends the speaker so that the sides don't come into contact with the crate. The speaker will be wrapped in a foam similar to how they are delivered when new.

www.cmbintegrations.com
One step from the Presidency
#1 Trinnov Altitude 32-8-16, 271, 8000XE, 7200SEHC, 7200.2, Seaton F18, JL Fathom F113, Revel w990's, Kef R7, ATI 528 Amp, JVC RS4100K, SI screen. Roon Nucleus+, Eno AG, Eno M link, 218.
#2 Mark Levinson No5105, Ayre VX8 and CX8, Vandersteen Treo CT, Preamp varies.
#3 Meridian Ellipse