any idea why the ceiling has small drop down section above shower? bathroom is in lower level. has 8ft ceilings in rest of area. ceiling in bathroom is 7 feet. shower is 6'-10" or so. yes there is a pvc pipe above shower running from the upstairs bath which is about 6 feet to the side of basement bath. shower has tile walls, not a formed fiberglas enclosure so height can be anything. if you built this shower from scratch, would you do away with ceiling drop?