Ventilation holes at back of washer dryer inner drum

[Clara]

Some models like LG have holes at the back of the inner drum. Others like Electrolux have a flat panel. 

Does it make any difference to the performance or life of the washer dryer?

Edited November 10, 2024 by Clara
clarity

[Whitegoodshelp]

I presume they are small holes, similar to the holes in the main part of the drum? They must be to help water run out of the drum though we've had washing machines since the 1950s at least and none of them had holes at the back. I can't imagine they'd make much difference either way. When spinning, all the laundry is pressed against the sides of the drum and they spin for easily enough time to get rid of the water through the sides.