Filling boxes with the right items until they are full is just one step the next is putting boxes into the right slice in your storage. If you are like me and you use a lot of farms that produce large amounts of full boxes of items you want to filter those directly with a machine like this. It can sort 7,776,000items/hour which is far more than any reasonable farm produces while causing minimal lag when running. It is 1 wide tileable and the output has minimal obstructions around it so its very easy to put these into your storage hall.
My discord: / discord