Yes Occ , thats the way to measure !!! U got it !
Now u just need to go to my post 20 . See the bottom pc EOS slanted pc .
Measure from top again see the 385mm one issit the same ?
If same u are good to go !!!
( BTW , Pls dun ask me how to measure for tiles ... too chim for me to convert . U can try using my measurement and ask the tile cutter to calculate and cut for u ) Just to add on why i dun use tile , if u dun silicone down the base , when algae grow and u scrub the tiles will move too !!! this will damage ur side silicon and add extra pressure to the tank base )