Products Access Doors (Rectangular) Access Doors (Round) Bullhead Tee (Bullnose) Companion Angle Rings – Pressed and Rolled for Spiral Pipe and Fittings Complete Seal Damper Sleeve Complete Seal Damper Sleeve with 2-inch Standoff Complete Seal Fittings Concentric Reducer Conical E-Z Tap with 2-inch Standoff Collar Connector (Coupling) Double Deflection Spiral Duct Diffuser Double Rod Hanger [...]