PURE SHIELD is a new product which combines the access control system installed next to the entrance door of an apartment complex with the air shower. It protects the indoor space from invisible fine dust and external contaminants before entering the residential space. Having the simplicity and cleanness felt by the minimal and simple form as keys, PURE SHIELD is designed to have easy access by users with its friendly image and provides convenience to the users with the display located in the middle to check the concentration of fine dust and the level of air contamination. PURE SHIELD is a new facility for the eco-friendly lifestyle.