Bathrooms have I suppose what you could call drop ceilings made up of some sort of insulation material with a white lower section visible in the room. These individual sections are supported by rails on studs on two sides. The other two sides of it are supported by removable inverted T strips made of plastic. Over the years the insulation sprayed into bathroom attic area has weighed down these panels and the plastic T strips have misshapen under the weight and ceiling is sagging in one area.
What I need is proper nomenclature for these T strips and possible source aluminum ones would work best i suppose.