Below is a diagram that was made to help understand the details of how we construction our Oak products. The following is just a diagram and should not be viewed as how one of our products will look when it is finished.   If 8ft ceilings, 4 pcs 7 ft. chain (a little extra) 4 chain connectors to fit eye lag screws & chain 4 chain connectors to fit chain and top device A brief history of wood, varnish and mildew Sunlight: Ultraviolet rays deteriorate wood by breaing down its lignin - a natural "glue" that holds the wood fibers together. A transparent finish lets these rays through. Then, as the wood beneath the finish deteriorates the finish cracks and lets moisture in... resulting in mildew.