Profile: Royal Metal Products, Inc. offers residential and light commercial sheet metal HVAC products. We have pipe, elbows, tees, wyes and boots. We have accessories, which includes flat full hem, drive snap and standing seam, boot rail, ceiling collar, toe plate, plaster frame & stud guard.We also have conical spin fittings, plenum chambers, tees, wyes & reducers, wall stack and rectangular duct.Royal's Ceiling Radiation Damper Assemblies reduce the fire safety risk with an insulated damper that closes to create a heat and fire barrier, which keeps the fire from spreading.