You might think about a 2 or 3 inch wall in the front. They call it a litter trap. I used white kitchen and bath caulk in all of my edges. I also used melamine instead of wood because it in non porous like wood. To attach the glass track, I used liquid nails. A 2 week offgassing period should be used for caulk and liquid nails to be safe. I used 2 or 3 inch soffet vent from lowes for venting, depending on how much humidty you need. I have seen glass track sold in 6 foot sections. It is good to keep 1 running piece of track if possible. If there are any questions let me know.

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