The Lead-Lined Preperation Enclosure is designed for applications that require handling gaseous radioactive materials. The interior provides ample floor space. A large lead glass window and hologen light allow safe and unobstructed viewing. The enclosure opening has an adjustable shield that creates access ports. A swing down shield covers the ports when not in use. Gaseous materials are directed by a baffle(eliminating dead space) through a stainless stell chimney. The chimney is connected to external blowers (not supplied) and ductwork (not supplied).The blowers create a negative pressure ppreventing gas leaks.