Question about Phy-HP Open Baffle Project

[WFCkeyman]

Hi!
I want to build the Phy-HP open baffle with H30LB15 and twin TW-37 that is based on the links below.

openbaffle

twinplate

But Twin TW-37 plate failed to indicate the screw mounting holes for both twin TW-37 and H30LB15.

Anyone can advice??

Thanks!