A pathogen containment shield comprises a plexiglass barrier to protect both employees on the one side of the barrier from infecting or being infected by customers on the other side of the barrier. The shield includes a vertical portion with an upper outwardly extending portion and side wings extending outwardly from the vertical portion in the direction of the customer. A hood mounted to the upper outwardly extending portion and including a tourmaline and antimicrobial infused filter, a fan designed to direct droplets into the filtration box at the base of the vertical barrier. The hood also includes an auto distance sensor and programmable auto timer to activate the fans and the filtration box when a customer approaches the shield and to turn off the operation a set time after the customer leaves. The filtration box includes a removable tourmaline and antimicrobial infused intake filter and pathogen killing UV-C light.

An article exchange assembly for reducing transmission of pathogens includes a housing, which is mountable in an opening in a wall of a structure below a service window positioned in the wall. The housing extends from the opening into the structure and has a front face, which is open. A set of drawer slides is engaged to and positioned in the housing. The drawer slides are selectively extensible through the front face of the housing. A drawer is operationally engaged to the set of drawer slides. A plurality of fasteners is engaged to a tray, which is positioned in the drawer. The fasteners selectively engage article to the tray. A lift module selectively elevates the tray to positioned proximate to a top of the drawer so that the articles are accessible to a person seated in a vehicle positioned exterior to the structure and proximate to the service window.

A method of constructing a cleanroom pass-thru chamber includes bending a single sheet of material into a monolithic frame having a first side, an opposing second side, a third side extending between the first and second sides, an open front end and an open rear end. The first side defines a first lip at a free end thereof and the second side defines a second lip at a free end thereof. The monolithic frame is bent to form four coved internal corners. The first lip and the second lip define an open portion therebetween. A first plate is attached to the two opposing lips and extends therebetween, closing the open portion of the monolithic frame, thereby forming an inner shell. The inner shell is positioned within, and attached to, an outer frame.

An article exchange assembly for reducing transmission of pathogens includes a housing, which is mountable in an opening in a wall of a structure below a service window positioned in the wall. The housing extends from the opening into the structure and has a front face, which is open. A set of drawer slides is engaged to and positioned in the housing. The drawer slides are selectively extensible through the front face of the housing. A drawer is operationally engaged to the set of drawer slides. A plurality of fasteners is engaged to a tray, which is positioned in the drawer. The fasteners selectively engage article to the tray. A lift module selectively elevates the tray to positioned proximate to a top of the drawer so that the articles are accessible to a person seated in a vehicle positioned exterior to the structure and proximate to the service window.

A locking assembly is operatively coupled to a first door and a second door of a pass-through housing. The locking assembly includes a first locking pin on the first door and a second locking pin on the second door. The locking assembly engages the first locking pin and locks the first door when the second door is opened, and engages the second locking pin and locks the second door when the first door is opened.

A locking assembly is operatively coupled to a first door and a second door of a pass-through housing. The locking assembly includes a first locking pin on the first door and a second locking pin on the second door. The locking assembly engages the first locking pin and locks the first door when the second door is opened, and engages the second locking pin and locks the second door when the first door is opened.