Paintbrush craft paint brush case - ventilated

I got a set of small paintbrushes to paint my 3d models and the bag they came in split. I put them in a pencil case but they remained damp if not properly dried before putting them away.  So here is a sliding top case for 190mm paintbrushes which has a ventilated top and bottom to allow air to circulate and so avoid dampness.    Top or bottom just about fit on an A1 mini if you place them diagonally so you need 2 plates.   For an A1 or anything bigger you can easily print top and bottom together.    If you don't want the top and/or bottom to be open just adjust the top and bottom layers to be 3 rather than 0.  Setting the layers to zero gives the open honeycomb look. 

NOTE: the top and bottom will look solid until you put them through the slicer then you should see the honeycomb effect.