Can anyone tell me where I can find hinged flanges to go around radiator pipes where they go through the hardwood flooring? I inherited two heavy-duty, old flanges with my 100+ year old house. I need about 18 more! The hinged flanges sold at the hardware stores around me are all thin and cheap plastic. I would like to find brass or iron flanges that I can paint an antiqued brass color to match my radiators. I need flanges for o.d. 3/4″ and 1.5″ pipes. BTW, I am near the St. Louis area. Thanks!