you may or may not get that to work.
it may not need help for exhaust or it may need it.
the length of the tube leaving the box out the window is very important.
the ambient room temperature of input air is important.
Ie 3 boxes like your photo in a 0c (32f) garage would be fine even if the tubes to the window are more then 6 feet
but 3 boxes like your photo in a 30c (86f) garage would most likely over heat without help to pull air through the tube
also size of tube matters 10 inch size for 1 t17 should be good with no help 5 inch size too small needs a helping fan.
inside of tube is important
ie great tube for air flow due to size and inside shape allow for easy air flow
https://pvcpipesupplies.com/pvc-pipe/pvc-schedule-40-pipe?pipesize=480not so great tube due to size and inside shape it resists air flow
https://www.homedepot.com/p/Master-Flow-6-in-x-25-ft-Insulated-Flexible-Duct-R6-Silver-Jacket-F6IFD6X300/100396935here is a compromise tube
https://www.homedepot.com/p/Master-Flow-Mobile-Home-12-in-x-25-ft-Insulated-Flexible-Duct-R4-2-Black-Jacket-MIF12X300/202191788nice and big so it does not restrict air flow that much
in all cases above longer tube may trap heat without some fan help
lastly a tube that points upward to the window gets help from the hot air rises rule (convection).
