HEPA filter module including the fan filter unit , HEPA filter box unit, and laminar flow ceiling.

The filter fan unit inside not only have HEPA filter but also have fan for push the air filtration. 

The HEPA filter box inside fixed hepa air filter,outside air duct must compact with HVAC Central air-conditioning for the cleanroom terminal air filtration. 

Lamianr flow ceiling normally install at operation room laminar flow ceiling, this unit inside is mini-pleats HEPA filter,the flange must connect with HVAC centrial air conditioning so that the operation room inside with very high purificaiton rank.