has anyone bothered to make airtight boxes for there front 6.5" splits ?

if so how are you doing it??

im trying atm with a rew ring spacers and the stock spacer all stuck together.
just trying to make it better than it is atm,
plus i dont like it how water from the window is directly above the speaker....


the window hasnt been an issue yet, but i'll see how i go tonight, i think i have about 8mm before it hits the window, so i should be alright..

any other ideas would be helpful though