45 wide wont fit.. 44.5 is max .. unless u take the plastic panels off in the back .. 33 isnt going to work eigther if he plans to keep those batts there... 5.5 per 18 is iffy
He measured it and I have remeasured it. The plastic panels can bend in a little if needed also 33 deep will work with the batteries. I took off the flaps and that gained me like 2 inches.