Rosco, or Rosco Laboratories, is one of the largest and oldest manufacturers of theatrical instruments in the world. They are based in Ney York, with branch offices in Toronto, London, Marid, Sao Paulo and Sydney. Although most well-known for gels and gobos, the have a huge line: Gels, DMX Cables and connectors, Fabics, Candles, Mirrors, Drapes, Dance Floors, Fog Machines, Software, stage hardware and scene paints.
They can be contacted on the web at, where else, rosco.com, or telephone at (1.800) ROSCO-NY.