Hey guys. So im building a 6 foot long viv with malamine board. Solid top bottom and sides. Glass sliding doors and mdf board on back. My question now is what should i use to support the middle of the viv? Being as long as it is it has a slight bow to it. First thought was 2x4s but thatll take up a bit of room and probably needs to be sealed (rather not seal anything) and i dont want to have a middle bar right in the center of the viv as it would throw the look off. What would you do? Thanks guys youve been lots of help!